What is the name of the type that denotes floating-point numbers that can have fractional parts?

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

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.