Alyssa is twice as old as Brittany, and Jazmyn is 12 years older than Alyssa. If Jazmyn is 36 years old, how old is Brittany? Let a represent Alyssa's age in years and b represent Brittany's age in years. use tape diagrams and equations to solve the problem with virtual models and algebraic methods​

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )