What do counterfactual explanations provide for specific instances?

In January 1983, Anna starts a new job and makes an annual salary of $38,000. By January 1986 her annual salary has increased to $46,600, and by January 1991 it has increased to $158,100. What is the average rate of change of her salary between January 1986 and January 1991?

Find the real or imaginary solutions by using the quadratic formula.      x2 + 35 = 5x

Find f(x – 1) when f(x) = 3×2 + 4x + 5.  For your answer, just enter the constant value in the blank. For example, if your answer is 3x + 7, just enter the 7 in the blank.     

Determine whether the function is even, odd, or neither. Type your answer in all lowercase letters!    f(x) = -5×4 + 4x + 4  

Which solution has the highest basic pH?

The reaction                   2H2(g) + 2NO(g)  ->  2H2O(g) + N2(g)             is first order in H2 and second order in NO. Which is the rate law?

A reaction must be nonspontaneous at all temperatures when

The equilibrium expression for Kc for the system (note: there are solid substances)                   CaSO3(s)   ⇌   CaO(s) + SO2(g)                is

Which of the following salt solutions is basic?