Evaluating Algebraic Expressions

Which of these is equivalent to 5a?

5 + a

5/a

5 * a

5 - a

If b = 3, evaluate the following expression: 4^b + 4

If c = 4, evaluate the following expression: 7c + 5

If d = 3, evaluate the following expression: d / 3

If e = 4, evaluate the following expression: e² + 3

If f = 7, evaluate the following expression: f + 7

If g = 4, evaluate the following expression: g² - 4

If h = 2, evaluate the following expression: 4h + 2

If j = 2, evaluate the following expression: j / 6

If k = 3, evaluate the following expression: 3k - 4

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