ALG Lesson 14-15 Practice

Select the correct expression that represents the situation: A person's salary is $3,500 a month. They receive a 18% raise. What is their new salary?

• 3500(1.18)

• 3500(.82)

• 3500(1) + (.18)

• 3500(1 - .18)

Tags

CCSS.6.RP.A.3C

Select the correct expression that represents the situation: A test had 50 questions. A student answered 75% correctly. How many question did the student answer correctly?

• 50(.75)

• 50(.25)

• 50(1) + (.75)

• 50(1 - .75)

Tags

CCSS.6.RP.A.3C

Select the correct expression that represents the situation: A new cell phone costs $450. The Illinois sales tax is 8.5%. What is the cost of the cell phone including tax?

• 450(1 + .085)

• 450(1.85)

• 450(1) + (.085)

• 450(1 - .085)

Tags

CCSS.6.RP.A.3C

In April, a family used 2,500 gallons of water. In June they used 30% more water. Select the expression that INCORRECTLY represents the number of gallons of water used in June.

• 2500(1.30)

• 2500 + 2500(.30)

• 2500(1+.30)

• 2500(1-.30)

Tags

CCSS.7.EE.B.3

In April, a family walked their dog a total of 60 miles. In July they walked their dog 15% less. Select the expression that INCORRECTLY represents the number of miles the family walked their dog in July

• 60(.85)

• 60(1-.15)

• 60 - 60(.15)

• 60(1.15)

Tags

CCSS.6.RP.A.3C

In 2011 the population of geese on a lake was 350. In 2012 the population increased by 9%. Which expression represents the geese population in 2012?

• $350\left(1.09\right)$

• $350\left(1.09\right)^2$

• $350\left(.91\right)$

• $350\left(.91\right)^2$

Tags

CCSS.HSF.BF.A.2

In 2011 the population of geese on a lake was 350. Every year after 2011, the population increased by 9%. Which expression represents the geese population in 2013?

• $350\left(1.09\right)$

• $350\left(1.09\right)^2$

• $350\left(.91\right)$

• $350\left(.91\right)^2$

Tags

CCSS.HSF.BF.A.2

In 2011 the population of geese on a lake was 350. Every year after 2011, the population increased by 9%. Which expression represents the geese population after t years?

•  $350\left(1.09\right)\times t$ 

•  $350\left(1.09\right)^t$ 

•  $350\left(.91\right)\times t$ 

•  $350\left(.91\right)^t$ 

Tags

CCSS.HSF.BF.A.2

Charlie is shopping for basketball shorts. The shorts were originally $40 and are located on a 20% off sale rack. Charlie also has an additional 20% coupon to use. What is the final cost of the shorts?

• 40(.80)(.80)

• 40(.80) - (.20)

• 40(.80) + 40(.80)

• 40(1 - .20 - .20)

Tags

CCSS.7.EE.B.3

A person loans his friend $200. They agreed to an annual interest rate of 10%. Which expressions represents the amount owed on the loan after 2 years (if no payments are made)?

• $200\left(1.10\right)^2$

• $200\left(1.10\right)\left(.10\right)$

• $200\left(.10\right)\left(.10\right)$

• $200\left(.90\right)^2$

Tags

CCSS.HSF.BF.A.2