−2x(x+5) for x=−3 , if you can explain

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.

Which point is a solution to y s 4x + 5?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?