1a.

**Answer:**

1b.

**Answer:**

2a. The sum of 8 times a number and 4 subtracted from 16 times
a number.

**Answer:**

3a.

**Answer:**

3b.

**Answer:**

3c.

**Answer:**

4a The product of 5 and a number is 8 less than 7 times that
number.

**Answer:**

Let *x *= the number

**The number is 4.**

4b. Complimentary angles sum up to be 90 degrees. Find
the measure of each angle in the figure below. Note that since the
angles make up a right angle, they are complementary to each other.

**Answer:**

**The angles are 34 degrees and 56 degree.**

4c. 14.4 is what percent of 60?

**Answer:**

Let *x* = the percent

*x* is 24%.

4d. You are wanting to buy a stereo system that costs $325
plus tax. If you are going to be taxed 8.25%, how much will be the
final cost of the stereo system? (round to the nearest cent)

**Answer:**

Let *x* = final cost

**The final cost would be $351.81.**

4e. You are traveling down I-40 at a constant speed of 70 mph.
How many hours will it take you to travel 385 miles?

**Answer:**

Let *t *= the number
of hours

**It would take 5.5 hours.**

4f. A total of $1000 is deposited into two simple interest
accounts. On one account the annual simple interest rate is 5% and
on the second account the annual simple interest rate is 7%. The
amount of interest earned for 1 year was $64. How much is invested
in each account?

**Answer:**

*x *= amount in 5%

1000 - *x* = amount
in 7%

**Deposited $300 at 5% and $700 at 7%.**

5a.

**Answer:**

5b.

**Answer:**

5c.

**Answer:**

Last revised on July 28, 2011 by Kim Seward.

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