Name: ______Date: ______

Review Practice Problems

  1. A rectangle has an area of 12 m.2 and a width of 400 cm. What is the length of therectangle?

A. 3 cmB. 30 cmC. 300 cmD. 3000 cm

  1. What is the area of a circle with a circumference of 43.98226 inches?

A. 153.44029 in.2B. 153.93791 in.2C. 153.9325 in.2 D. 153.9394 in.2

  1. The tension caused by a wave moving along a string is found using the formula . If m is the mass of the string in grams, L is the length of the string in centimeters, and v is the velocity of the wave in centimeters per second, what is the unit of the tension of the string, T?
  1. gram-centimeters per second squared
  2. centimeters per second squared
  3. grams per centimeter-second squared
  4. centimeters squared per second
  1. The kinetic energy of an object in motion is found using the formula KE = ½ mv2wherem is the mass of the object in kilograms and v is the velocity of the object in meters per second. If the velocity of the object is 20 meters per second, what is the coefficient of m?
  1. 10 meters/second
  2. 20 meters/second

C. 200 meters squared/second squared

D. 400 meters squared/second squared

  1. A certain population of bacteria has a growth rate of 0.02 bacteria/hour. The formulafor the growth of the bacteria’s population is A = P0(2.71828)0.02t, where P0 is theoriginal population and t is the time in hours. If you begin with 200 bacteria, approximately how many of the bacteria can you expectafter 100 hours?

A. 7.38905B. 271.828C. 1477.81D. 20,000

  1. What is the solution to the equation P = 2l + 2w when solved for w?
  1. B. C. D.
  1. Bruce owns a business that produces widgets. He must bring in more in revenue than hepays out in costs in order to turn a profit.

•It costs $10 in labor and materials to make each of his widgets.

•His rent each month for his factory is $4000.

•He sells each widget for $25.

How many widgets does Bruce need to sell each month to make the minimum

profit?

A. 160B. 260C. 267D. 400

  1. The area of a city is commonly measured in:

A. Square Feet B. Square Miles C. Square Inches D. Cubic Centimeters

  1. A rectangular fish tank contains 3, 240 cubic inches of water. The dimensions of the base of the fish tank are 12 inches by 18 inches. How tall is the fish tank?

A. 15 inB. 15 in2C. 216 inD. 216 in2

  1. Amy and her sister are making lemonade for the school dance. Their recipe makes 2 quarts of lemonade. If a serving of lemonade is one cup. How many gallons of lemonade will Amy and her sister need to make in order to serve one serving of lemonade to 300 people?
  1. 18.75 gallons B. 37.5 gallons C. 37.5 quartsD. 300 cups
  1. Marie would like to create a line graph to present this data for a class project. What vertical scale should she choose to best communicate how population density has increased in Haiti?

A. 0 to 1000

B. 0 to 300

C. 0 to 400

D. 200 to 400