Given the parent function f(x)=x^3 give the the best description of the graph of y=-(2x)^3.

a.
reflected over the x-axis, compressed horizontally by a factor of 2
b.
reflected over the x-axis, compressed vertically by a factor of 2
c.
reflected over the x-axis, compressed vertically by a factor of 1/2.
d.
reflected over the x-axis, compressed horizontally by a factor of 1/2.

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.