Algebra I Exercises: Variables in Algebra

Question Group #1

Directions and/or Common Information:

Evaluate each algebraic expression.

5 + x when x = 4

4x - 2 when x = 2

(m/2) + 7 when m = 10

(12/k) + y when k = 6 and y = 5

Question Group #2

Directions and/or Common Information:

Determine the interest earned given the following figures.

Principle = $1,000

Rate = 3%

Time = 1 year

Principle = $22,000

Rate = 5.8%

Time = 6 months

Principle = $2,000

Rate = 12%

Time = 4 months

You place $10,000 in a bank account with an interest rate of 5.5%, and let it accrue interest, how much will you have at the end of 20 years (interest + principle)? How much will you have made in interest alone after 20 years? At the end of 50 years?

Question Group #3

Directions and/or Common Information:

Convert the Celsius temperature measurements into Fahrenheit measurements.

10°C

22°C

90°C

0°C

Question Group #4

Directions and/or Common Information:

Calculate the distance traveled with the given variable. Round your answer to the nearest tenth.

rate = 5 mph and time = 10 hours

rate = 12 mph and time = 22 min

rate = 37 kph and time = 56 min

rate = 58 mph and time = 20 sec