Which unit of measure would you use to measure the mass of of a grape. a gram, a kilogram, a inch, it a meter. you are my only hope

Dilations map circles to circles and ellipses to ellipses with the same. true or false

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.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.