Algebra Spirals

Which expression is equivalent to 4(a + 4) - 2a? 

• 2a + 16
• 2a + 4 
• 4 - 1a
• 3a + 8

Simplify the expression below.
 
12xy − 15x + 6xy

• -9xy
• 3xy
• 18xy - 15x
• 6xy - 15x

Ryan, Darius, and Mason each have $15.75. They each spend the same amount (d), in dollars, at the school fair. The total amount of money they still have can be expressed as 3(15.75 – d). Which expression is equivalent to the total amount, in dollars, they still have? 

• -3d + 15.75
• -3d + 47.25
• 18.75 - d
• 47.25 - d

At the grocery store, Jerry spent $24.75 for 3 pounds of chicken and 3 pounds of cheese. The cheese cost $4.50 per pound. What was the cost of the chicken per pound? 

• $2.75
• $3.75
• $5.75
• $6.75

If x = -24 and y = 6, what is the value of the expression            │x + y │? 

• 18
• 30
• -18
• -30

Anna works as a painter. She charges $130 for paint supplies and $25 for each hour, h, she works. Which expression represents the total amount of money Anna charges? 

• (130 + 25)h
• 130 + 25h
• 130h + 25
• 130 + (25 + h)

Hank sells toy cars on a web site. The web site fee is $30. Hank sells each toy car for $4. What inequality does Hank use to determine how many toy cars, c, he must sell to make a profit of at least $50? 

• 34c ≤ 50 
• 34c ≥ 50 
• 4c + 30 ≤ 50 
• 4c − 30 ≥ 50 

If x represents a given number, the expression “5 less than twice the given number” is written as 

• 5 < 2x
• 5 < 2 + x
• 2x - 5
• 5 - 2x

Hector spent $17 for a tube of paint and 5 brushes. The tube of paint cost $8. Which equation can be used to find b, the cost of each brush? 

• 17 = 5b + 8
• 17 = 8b + 5
• 17b = 5 + 8
• 17 = b + 5 + 8

Stacy starts a savings account with $15. Each month she deposits $10 more into her account. Stacy now has saved $75.  Which equation can be used to determine how many months, m, Stacy has deposited money into her savings account?

• 10m · 15 = 75 
• 15m · 10 = 75 
• 10m + 15 = 75 
• 15m + 10 = 75