87= 5x - 13

(Worth 10 points)

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.