Which of the following options is an equivalent function to f(x) = 4(3)2x?
a: f(x)= 36x
b: f(x)=4(9)
c: f(x)=144x
d: f(x)=4(6x)

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?