67. The product of x and z.
68. y times z, plus w.
69. The product of w and y, decreased by x. 70. w times x, increased by y.
71 Adrian works 40 hours a week. He earns $5.75 per hour. How much does he earn per week
72. Find the area of a rectangle when the length is 13.5 inches and the width is 7.12 inches.
73. Carlos bought 16 gallons of gasoline for $2.59 per gallon. What was the total cost he paid?
