Evaluate expressions

Question 1

The perimeter of a rectangle is P = 2(l + w). Find P when l = 3 and w = 13.

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Question 2

Evaluate x² + 2y when x = −2 and y = 5.

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Question 3

Find the value of 8x + 9 when x = 3.

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Question 4

Use v = u + at to find v when u = 15, a = 8 and t = 6.

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Question 5

Evaluate x² + 2y when x = 0 and y = −4.

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Question 6

Find the value of 9x + 13 when x = 1.

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Question 7

The perimeter of a rectangle is P = 2(l + w). Find P when l = 16 and w = 6.

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Question 8

Evaluate x² + 4y when x = 6 and y = 7.

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Question 9

Find the value of 4x − 2 when x = 4.

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Question 10

The perimeter of a rectangle is P = 2(l + w). Find P when l = 3 and w = 10.

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Question 11

Evaluate x² + 3y when x = 4 and y = 4.

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Question 12

Find the value of 7x + 15 when x = 1.

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Question 13

The perimeter of a rectangle is P = 2(l + w). Find P when l = 3 and w = 9.

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Question 14

Evaluate x² + 3y when x = −3 and y = 8.

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Question 15

Find the value of 7x + 14 when x = 2.

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Question 16

Convert 55 °C to °F using F = 9C/5 + 32.

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