To determine if a drug has an effect on patient illness, a researcher gives the drug to 100 patients and gives a placebo to another group of 100 patients.
What type of study is this?
DONE
) Intro

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Can someone me out here number 4 plz

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)