For the function f(x)=3x-7,f(8)=17, what is f(3)

The sum of two numbers is 86, and their difference is 20. find the two numbers

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

You went to a restaurant and spent $53.25 on the meal. there was a 6% sales tax. what was the amount of money, not including a tip, you spent at the restaurant?