Review Questions

Tylisha works at an electronic store and also tutors.

* She earns $10 per hour at the electronics at the electronics store

* She must work at least 8 hours each week at the electronics store

• * She tutors for $15 per hour

• * She wants to earn at least $120 per week

• * She does not want to work more than a total of 20 hours per week

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  Which system of inequalities can be used to determine the number of hours Tylisha can work each week at the electronics store, e, and the number of hours she can tutor, t?

• e > 8

  10e + 15t > 120

  e < 20 − t

• e ≥ 8

  10e + 15t ≥ 120

  e ≤ 20 − t

• e ≤ 8

  10e + 15t ≤ 120

  e ≥ 20 − t

• e < 8

  10e + 15t < 120

  e > 20 − t

The expression 1,000(1.05)^x represents the amount of money William has in his account after x years. What does 1.05 represent?

• The amount in the account increases by 5% each year

• The amount in the account increases by 105% each year

• The amount in the account increases by 1.05% each year

• The amount in the account increases by 0.05% each year

• 2

• 4

• 5

• 7

Rodney purchases a car for $17,400. The value of the car depreciates by 12% per year. What is the approximate value of the car after 8 year?

• $5,380

• $6,258

• $11,142

• $17,304

Richard and Jason each begin filling pools at the same time.

* Richard fills his pool at 6 gallons per minute

* Jason's pool already has 200 gallons, and he fills it at a rate of 2 gallons per minute

How many minutes passes before both pools have the same amount of water?

• 300

• 100

• 50

• 33

Kevin and Joseph sold T-shirts and Jackets to raise money for the basketball team.

* Kevin sold 10 T-shirts and 3 jackets and collected total of $186.

* Joseph sold 7 shirts and 5 jackets and collected a total of $194.

* The cost of each T-shirt was the same, and the cost of each Jacket was the same.

Which system of equations can be used to determine the price of each T-shirt, x, and the price of each jacket, y?

Marlon earned $5,000 over the summer

* He spent $800 of his earnings

* He invested the remainder into an account that pays 3.5% interest compounded annually.

Which equation represents the value of the account, V, after x years?

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