Lauren and her grandmother have birthdays on the same day. If the sum of their ages is 80 years old and Lauren's grandmother is four more than three times Lauren's age, how old are each of them?

Which graph represents the parent function of y=(x+2)(x-2)

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

How to find the exponential function y=ca^x, with points (1,2) and (2,1)