Find the solution to this system:

Which graph has the greatest slope:

Perform operations and Simplify when x is 4:

Fill in the Blank:  A system of equations will _________ have one solution:

Perform operations and Simplify when w is 5:

Fill in the Blank:  A negative number can ____________________ be a solution to an equation containing a square root.

Perform operations and Simplify when d is 9:  

Simplify the expression with only positive exponents:

Write the equation for a line going though points (4,35) and (9,60) in slope intercept form. *Note: Write as “y=3x+5” (no spaces)

Which group of animals were probably the first land animals?  What features made this group pre-adapted to life on land?