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Joe’s uncle is eight less than four times Joe’s age. Which of the equations represents Joe’s uncle’s age (u) as it relates to Joe’s age (k)?

A. u=8-4k

B. k=4u-8

C. k=8-4u

D. u=4k-8

Answer Explanation:

We are asked to form an equation to find Joe’s uncle’s age to the age of Joe.

First, we find Joe’s age which is k. We know that Joe’s uncle’s age is four times that of Joe less 8. Then,

Joe’s uncle’s age, u = 4k-8.

Thus, the age of Joe’s uncle is u=4k-8.

Therefore, the Correct Answer is d.

Q #1: Joe’s uncle is eight less than four times Joe’s age. Which of the equations represents Joe’s uncle’s age (u) as it relates to Joe’s age (k)?

A. u=8-4k

B. k=4u-8

C. k=8-4u

D. u=4k-8

Answer Explanation

We are asked to form an equation to find Joe’s uncle’s age to the age of Joe.

First, we find Joe’s age which is k. We know that Joe’s uncle’s age is four times that of Joe less 8. Then,

Joe’s uncle’s age, u = 4k-8.

Thus, the age of Joe’s uncle is u=4k-8.
Q #2: Which of the following is the appropriate unit of a measure to express the weight of a pen?

A. Liter

B. Milliliter

C. Gram

D. Kilogram

Answer Explanation

Although we can measure the mass of the pen in kilogram, the unit is quite large and is not appropriate for measuring small objects. Liter and milliliter are units of measuring volume. Thus, gram is the appropriate unit for measuring weight of a pen.
Q #3: As the number of working hours increases, the company experiences an increase profit, production, and a decrease in overhead costs. Which of the following is the independent variable?

A. Profit

B. Working hours

C. Production

D. Overhead costs

Answer Explanation

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