Which of the following is a direct proportion?
A. y=7x
B. y=x+7
C. y=7x−7
D. y=7

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?