Math Models Midterm

f 6 is multiplied by the difference of a number and 5, the result is 30. Which equation could be

used to find the value of the number?

• 6 (x - 5) = 30

• 6x - 5 = 30

• 6 (x + 5) = 30

• 6x + 5 = 30

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8.8.A

• 25

• 26

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1.1.B

Overnight, the temperature drops at a rate of 3° per hour. How long will it take for the

temperature to drop 18°?

• 5 hours

• 6 hours

• 7 hours

• 8 hours

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6.3.D

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1.1.B

Patty needs a total of $80 to buy a bicycle. She has already saved $35. If she saves $10 a

week from her earnings, what is the least number of weeks she must work to have enough

money to buy the bicycle?

• 3

• 4

• 5

• 8

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1.1.A

What is the value of x in the equation 3(2x − 1) = 21?

• 3

• 4

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1.1.B

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3.3.A

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2.2

Michele measured her resting pulse rate by counting her number of heartbeats

for a duration of one minute. She recorded the number of heartbeats every 10

seconds in the table​ (a)   .

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2.2.C

A system of linear equations is graphed.

What is the solution to this system of equations?

• x = -5, y = 3

• x = -3, y = -8

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1.1.C