Manipulating Equations and Understanding Their Structure

Solve for v, 2(v + 2) = a

• v = a - 2

• v = 2a

• Divide both sides by 4 

• Subtract both sides by 12

• Add both sides by 12

• Multiply both sides by 4

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

• 200 + x + 50

• 200x + 50

• 200x + 50x

• x = 64

• x = 16

• x = 256

• x = 128

Make W as the subject of the formula P = 2L + 2W

Miles can type 60 words per minute. Let t represent the total number of words and m represent the minutes. Which equation best represents this?

• 6 cards

• 15 cards

• 40 cards

• 32 cards

Solve for x:

2 - 4x = 3x - 12

• 2

• -14

• 10

• -2

Solve for x:
2(3x + 4) + 2 = 4 + 3x

• 2

• -2/3

• 10

• -2

Solve for x:

7x + 5 + x - 3 + x = 5

• 1/3

• 3

• 3/7

• 1