End of Cycle 2 Review

What formula will be used for Simple Interest?

• y=kx

• k=y/x

• I=prt

• A=P(1+r)^t

What formula will be used for compound interest?

• I=prt

• A=P(1+r)^t

• I=dt

• y=kx

Convert 2.5% into a decimal

• 0.25

• 0.0025

• 0.025

• 0.2255

What is the formula for constant of proportionality?

• y=kx

• k=x/y

• k=y/x

• x=ky

What is the equation for constant of proportionality?

• k=y/x

• k=x/y

• y=kx

• y=x

A family make homemade pickles. They pack the pickles at a rate of 80 pickles per 5 jars. What is the constant of proportionality?

• k=15

• k=80

• k=5

• k=16

If Cody invested $2,000 in an account at 2.5% simple interest and his balance is now $2,500. How much interest did he receive?

• $2,000

• $2,500

• $500

• $50

When finding percent of change what do you need to do?

• Original/change then multiply

• Change/Original then divide

• ADD then convert to percent

• Multiply then convert to decimal

Mrs. Hernandez buys raspas (snow cones) for All her Red Classes. They cost $3.50 each. What is the constant of proportionality, k, and what is the equation that represents this scenario?

• k=raspas

  y=raspas

• k=3.50x

  k=3.50y

• k=3.50

  y=3.50x

• k=3.50x

  y=3.50x

simple interest

• a fixed percent of the principal. It is found using the formula I=Prt, where P represents the principal, r the rate of interest, and t the time

• a percent change describing an increase in a quantity

• the initial amount of money borrowed or saved

• a percent change describing a decrease in a quantity