14) 4.5a = 9.0 15) 4.8b = 36

Problem Solving Strategy: Write an Equation

Write an equation for each problem using the variable -n. Then solve and check the equation.

16) Allan has 84 baseball cards. This is 19 fewer cards than Mike. How many baseball cards does Mike have?

17) Jamie can ride her bike 3 times as fast as Michelle can jog. If Jamie rides her bike at a rate of 12 miles per hour, how fast can Michelle jog?

Problem Solving Strategy: Mental Math

Study each equation, then solve.

18) 5 + r = 6 - r

19) z - 16 = - 16

20) 7n - 7 = 0

Francisco's credit card has an apr of 28.98%, calculated on the previous monthly balance. his credit card record for the last 7 months is shown in the table below francisco is trying to figure out what this all means. answer the following questions: what is the total amount that francisco has paid in interest over the 7 months? what is the total amount that francisco has made in payments over the 7 months? how much of francisco's payments have gone to paying down the principal on his account? what is francisco's new balance at the end of month 8? what will francisco be charged for interest for month 8?