Math Equations and Inequalities

9a - ab + 5b    
if a = 2 and b = 7

• 37

• 67

• 39

• 32

r/4 - 12 = -5

• 32

• 28

• -28

• 0

-3x − 4 < 5

• x > -3

• x < -3

• x < (1 ⁄ 3)

• x > (1 ⁄ 3)

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

Translate this phrase into an algebraic expression.
8 less than the product of 4 and a number
Use the variable m to represent the unknown number.

• 8 - 4m

• 8m - 4

• 8m + 4

• 4m - 8

I open a saving account with $200 and plan to put $50 per month in the account.
Which expression represents this situation after x number of months?

• 200 + 50x

• 200x + 50

• 200 + x + 50

Identify the property
a + b = b + a

• Identity of addtion

• commutative of addition

• associative of addition

• symmetric

Pick the answer that is an example of the commutative property of multiplication

• b + c + a = a + b + c

• a(b + c) = ab + ac

• a ⋅ b = b⋅ a

• a ⋅ 1 = a

3+0=3
is an example of which property?

• Multiplicative Inverse

• Additive Identity

• Multiplicative Identity

• Additive inverse

Find the error in the problem below:
19 - 2k = 3(k - 1)
19 - 2k = 3k - 1     
+3k   +3k
19 + 1k = -1
-19           -19
k = -20

• Incorrect application of the division property of equality.

• Incorrect application of the subtraction property of equality.

• I cannot find an error.

• Incorrect application of the distributive property.