Harry left his house at 7:30 A.M., and drove 124 miles to his sister's house. He arrived at 9:30 A.M. What was his average speed in miles per hour on this trip? 

2.Suppose y = 11 x - 3. 

Find y if x = 4. 

3.Use the formula P = 5 W + 5 L to find P. 

W = 6 inches and L = 12 inches. 

4.The formula G = HR tells us how much gross pay G a person receives for working H hours at an hourly rate of pay R. 

Find G if H = 23 hours and R = $6. 

5.The formula for the area A of a rectangle with length I and width w is A = Iw. 

Find A if I = 9 feet and w = 10 feet. 

6.The rate equation is . At 5:30 P.M. Ken leaves his house and drives at an average speed of 62 miles per hour to his mother's house. He arrives at 8:30 P.M. How many miles did Ken drive? 

7.The rate equation is . Griff left his house at 8:30 A.M., and drove 232 miles to his sister's house. He arrived at 12:30 P.M. What was his average speed in miles per hour on this trip? 

8.Because there are 3 feet in every yard, the formula F = 3 Y will convert Y yards into F feet. 

Find F if Y = 10 yards. 

9.The rate equation is . At 7:30 A.M. Laura leaves her house and drives at an average speed of 61 miles per hour to her sister's house. She arrives at 11:30 A.M. How many miles did Laura drive? 

10.If you can measure the area that the tires on your car contact the ground, and you know the air pressure in the tires, then you can estimate the weight of your car with the following formula: ,where W is the vehicle's weight in pounds, A is the average tire contact area with a hard surface in square inches, p is the air pressure in the tires in pounds per square inch (psi, or ), and N is the number of tires. 

What is the approximate weight of a car if the average tire contact area is a rectangle 7 inches by 3 inches and if the air pressure in the tires is 25 psi?