Unit 4 review

Evaluate the expression below if n = 5

6n + 10

• 50

• 40

• 30

• 20

Evaluate the expression below if y = 5.2

5² + (y - 3) - 6

• 5

• 28

• 35

• 21.2

Evaluate the expression below if a = 2 and b = 8

6 + 7b - 3a

• 56

• 100

• 35

• 15

The expression 1.8c + 32 shows how to convert from degrees Celsius to degrees Fahrenheit, where C represents the temperature in degrees Celsius. What is the temperature in degrees Fahrenheit when the temperature is 10 degrees C ?

• 10 degrees celsius

• 18 degrees celsius

• 50 degrees celsius

• 40 degrees celsius

Identify the constant in the expression

3x + 2y + 7

• 3

• 2y

• 7

• 2

Identify the coefficient(s) in the expression

4m + n + 2

• 2

• 4 , 1

• m

• n

Identify the variables in the expression
3x +  9

• x
• y
• 9
• 3x

Identify the coefficients in the expression below:

 $\frac{n}{8}$  + 7n - 10

• -10

•  $\frac{1}{8}$  , 7

• n 

• 3

Which expression represents the phrase

twice the sum of a number, n and 6

• n + 6

• 2 + n

• 2(n + 6)

• 2n = 6

Which of the following expressions represents the phrase:

5 less than a number, j

• 5 - j

• j - 5

• j + 5

• 5j