Let f(x) = x2 + 5x and g(x) = x2 − 1. find the function.
f · g
(f · g)(x) =

find the domain. (enter your answer using interval notation.)

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Is it greater than or less than7*3_9*2