Unit 6 Pre Algebra Review

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

Find the total amount of interest if interest is compounded annually (once a year). Principle of $2750 at 8% for 2 years. (round to the nearest cent)

• $220.50

• $457.60

• $660.60

• $237.60

Emilio borrows $1200 from a bank with 8% simple interest per year.  How much will he have to pay back total in 2 years?

• $150
• $192
• $1350
• $1392

Write the decimal as a percent: 0.37

• 37%

• 3.7%

• 0.37%

• 370%

There are 75 students in the school band.  45 students play woodwind instruments.  What percent of students play woodwinds?

• 35%
• 60%
• 55%
• 70%

There is a jar of jellybeans on Ms. Truesdale's desk. 40% of the jellybeans are red. If there are 55 jelly beans in the jar, how many are red?

• 20

• 22

• 24

• 25

Henry can write 5 pages of his novel in 3 hours.

At this rate, how many pages can Henry write in 8 hours?

• 13

• 4.8

• 14

• 13 1/3

• 33

Brenda can deliver 644 newspapers in 7 hours.

How many newspapers can Brenda deliver in 9 hours?

• 8 newspapers

• 4 newspapers

• 848 newspapers

• 828 newspapers

• 962 newspapers

Elaine has a collection of 300 CDs. Of these, 21% are Rock and Roll CDs.

How many Rock and Roll CDs does Elaine have?

• 25 CDs

• 16 CDs

• 60 CDs

• 63 CDs

• 68 CDs

My mom can bake 66 cupcakes in 3 hours. Write this as a unit rate describing cupcakes per hour.

• (66 cupcakes) / (3 hours)

• (3 hours) / (66 cupcakes)

• (21 cupcakes) / (1 hour)

• (1 hour) / (22 cupcakes)

• (22 cupcakes) / (1 hour)