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Evaluating and Translating Expressions
供稿人: Tillquist

If a=-3, b = 2, and c = -1, evaluate the following:

 

                              4a + 3c

15

 -15

-9

9

If a = -3 and b = 2, evaluate the following:

 

                           2a÷b

3

-3

-6

6

Evaluate  6x - 10, if x= 5.

75

55

-4

 20 

If x = 3 and y = 4, evaluate

                  6x - 3y.

29

15

6

30

If x = 3, y = 4 and z = 5, evaluate

 

                 x(y + z + 4)

24

16

None of the above

39

Translate.

 

four points more than Bob scored

b - 4

 b + 4

4b

b/4

Translate.

 

seven times a certain number

7 + n

7/n

 7n

7 - n

Translate.

 

a number decreased by 20

 n - 20

20n

20/n

n + 20

Translate.

 

   five increased by three times a number.

5 - 3 + n

5 + n

5 + 3 + n

 5 + 3n

Translate.

 

The quotient of a number and 2.

n - 2

2 + n

2n

 n/2
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