True or false? The ½ in the function g(x)=½ sqrt x-1 is x>-1

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

Simplify the algebraic expression 8y-2(y+4)