Equations--STAAR Review 8th

In the equation 2x-7 = x+15, what value makes x true?

• 20

• 22

• 24

• 26

Jacob buys 3 hot dogs and $1 soda. Marlena buys 2 hot dogs and $2 soda. They spend the same. What is the cost of one hot dog?

• 1

• 2

• 3

• 4

Carmen and Adela each spend the same amount of money. Carmen buys 3 bracelets and spend $1.50 on candy. Adela buys 1 bracelet and a $5 hat. How much does one bracelet cost?

• 1.17

• 1.50

• 1.75

• 2.00

What point below is the solution of y=3x-4 and y= -3/2x +5?

• (-4,5)

• (3,-4)

• (2,2)

• (0,1)

At what point will the equations y = 1/2x and y = 3/4x - 2 intersect?

• (8,4)

• (3,6)

• (0,0)

• (-4,-2)

Moe's Gym charges a fee of $15 to join and $30 per month. Big Mike's Gym charges a $30 fee to join and $20 per month. Which inequality could be used to determine after how many months(x) Big Mike's Gym would less than Moe's Gym.

• 15 + 30x > 30 + 20x

• 15x + 30 > 30x + 20

• 15 +30x < 30 + 20x

• 15x + 30 < 30x + 20

City Cycle charges $5 per hour to rent a bike, plus a $10 rental fee for the helmet. Bike Brownsville charges $22 per hour to rent a bike, and the helmet is free of charge. Which inequality could be used to find after how many rental hours (x) Bike's Brownsville is less than City Cycle?

• 5x + 10 < 22x

• 5x + 10 < 22 + x

• 5x + 10 > 22x

• 5x + 10 > 22 + x

Michael bought a $12.99 CD and 3 packs of gum. Andie bough a different CD for $8.99 and 6 packs of gum. Each of them spent the exact same amount. Which equation below could be used to find g, the cost of one pack of gum?

• 12.99 + x = 8.99 + g

• 12.99 + 3x = 8.99 + 6x

• 12.99 + 8.99 = 3x + 6x

• 12.99 + 6x = 8.99 + 3x

Kendra bought some shirts for $10 on tax-free weekend. Whitney bought some of the shirts at a sale later for $8.50 each, but also paid $4.50 in sale tax. They bought the same number of shirts for the same amount. Which equation could be used to determine (x) the number of shirts they bought?

• 10x + 4.50 = 8.50x

• 8.50x + 4.50 = 10x

• 10 + x = 8.50 + 4.50

• 10x - 4.50 = 8.50 + x

What does the word "PER" always mean?

• add

• subtract

• multiply

• divide