Proportional Relationships and Percent Problems

To solve for missing info in a proportion statement you must first

• Cross multiply

• Divide everything

• Get rid of variables

• Guess

Twenty years ago, Mr. Davis purchased his home for $160,000. Since then, the value of the home has increased about 5% per year. How much is the home worth today?

• $176,783.29

• $424,527.63

• $57,357.75

• $532,041,076.80

Find the sales tax only

$34.00 for movie tickets; 6.625% tax.

You can use a calculator.

• $ 2.25

• $ 2.83

• $ 2.37

• $ 36.38

If the sales tax rate is 6.75% in North Carolina, then how much would you pay in Raleigh for a pair of shoes that costs $49.00?

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

It cost me $46.80 to fill my 13-gallon gas tank. What was the price of gas per gallon?

• $3.60

• $3.55

• $3.40

• $3.50

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

Solve for x

• x=6

• x =1/6

• x = 7

• x=9

Solve for x 

• x = 1/10

• x = 10

• x = 4

• x = 5

A car travels 420 miles in 8 hours.  If the car continues at the same rate, how far will it travel in 12 hours?

• 630 miles

• 630 hours

• 600 miles

• 540 hours