Astronomers estimate that the plains of Venus are only about 500 to 600 million years old.  How do they estimate dates like this?

What is the atomic number of Titanium from the periodic table?

One piece of evidence that can help astronomers sort out how the planets in our solar system formed is.

Question #1 on the exam will be a link to the periodic table sheets.  Click on link to open the sheets. Do not write an answer for this question.  The exam will tell you that you have missed answering 1 question – ignore it.   https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view?usp=sharing   To toggle between the exam and the periodic table sheets, CTRL key 1 to open exam page, CTRL 2 to open periodic table pages.      The exam will tell you that you have forgotten to answer question #1.  Please ignore the alert.  Question #1 is worth 0 points.  UPLOAD YOUR “SHOW WORK FILE”  pdf  HERE.  your file MUST be a single PDF file.  Name the file “Practice Exam #2-your fullname”  

Question #1 on the exam will be a link to the periodic table sheets.  Click on link to open the sheets. Do not write an answer for this question.  The exam will tell you that you have missed answering 1 question – ignore it.   https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view     To toggle between the exam and the periodic table sheets, CTRL key 1 to open exam page, CTRL 2 to open periodic table pages.      The exam will tell you that you have forgotten to answer question #1.  Please ignore the alert.  Question #1 is worth 0 points.  DO  NOT UPLOAD A FILE HERE TO THIS PAGE  

Question #1 on the exam will be a link to the periodic table sheets.  Click on link to open the sheets. Do not write an answer for this question.  The exam will tell you that you have missed answering 1 question – ignore it.   https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view?usp=sharing   To toggle between the exam and the periodic table sheets, CTRL key 1 to open exam page, CTRL 2 to open periodic table pages.      The exam will tell you that you have forgotten to answer question #1.  Please ignore the alert.  Question #1 is worth 0 points.  UPLOAD YOUR “SHOW WORK FILE”  pdf  HERE.  your file MUST be a single PDF file.  Name the file “Practice Exam #2-your fullname”  

Question #1 on the exam will be a link to the periodic table sheets.  Click on link to open the sheets. Do not write an answer for this question.  The exam will tell you that you have missed answering 1 question – ignore it.   https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view     To toggle between the exam and the periodic table sheets, CTRL key 1 to open exam page, CTRL 2 to open periodic table pages.      The exam will tell you that you have forgotten to answer question #1.  Please ignore the alert.  Question #1 is worth 0 points.  UPLOAD YOUR “SHOW WORK FILE”  pdf  HERE.  your file MUST be a single PDF file.  Name the file “Practice Exam #2-your fullname”  

Question #1 on the exam will be a link to the periodic table sheets.  Click on link to open the sheets. Do not write an answer for this question.  The exam will tell you that you have missed answering 1 question – ignore it.   https://drive.google.com/file/d/1TC7YknAWuDTYBETWmVnEnbMnDiTSDNpf/view?usp=sharing   To toggle between the exam and the periodic table sheets, CTRL key 1 to open exam page, CTRL 2 to open periodic table pages.      The exam will tell you that you have forgotten to answer question #1.  Please ignore the alert.  Question #1 is worth 0 points.  UPLOAD YOUR “SHOW WORK FILE”  pdf  HERE.  your file MUST be a single PDF file.  Name the file “Practice Exam #2-your fullname”  

The chirping rate of crickets is linearly related to the temperature. A cricket produces 120 chirps per minute at and 168 chirps per minute at . a. Find the linear equation that relates the temperature x and the number of chirps per minute y. b. If the crickets are chirping at 150 chirps per minute, what is the temperature? c. What is the number of chirps per minute at a temperature of ?

Is this equation a function of x? Justify your answer.