**MTH
030 -- Elementary Algebra -- Exercise Solutions
Section:**

**27.
Identify the base and the exponent in the exponetial expression 4 ^{3}.
Solution: **The base is 4 and the exponent is 3.

**28.
Identify the base and the exponent in the exponetial expression (-
8) ^{2}.
Solution: **The base is -8 and the exponent is 2.

**29.
Identify the base and the exponent in the exponetial expression x ^{5}.
Solution: **The base is x and the exponent is 5.

**31.
Identify the base and the exponent in the exponetial expression (-
3x) ^{2}.
Solution: **The base is -3x and the exponent is 2.

**32.
Identify the base and the exponent in the exponetial expression -x ^{4}.
Solution: **The base is x and the exponent is 4.

**34.
Identify the base and the exponent in the exponetial expression 3.14r ^{4}.
Solution: **The base is r and the exponent is 4.

**35.
Evaluate (- 4) ^{2}**

**36.
Evaluate (- 5) ^{2}**

**37.
Evaluate - 4 ^{2}**

**38.
Evaluate - 5 ^{2}**