SHOPPING Ricardo spent half of his allowance on school supplies . Then he bought a snack for $5.25. When he arrived home , he had $22.50 left. Write and solve an equation to find the amount of Ricardo's allowance a.

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

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]