Zoe paid $18.60 in sales tax and tips for dinner the sales tax rate is 11% and to tip 20% what was the price of Zoe's dinner before sales tax and tip

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

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?