Exponential Test Review

Solve 3³ = 3^{4x + 2}

• x = ¼
• x = -¼
• x = ½
• x = -½

Solve: 2^x = 4^x+1

• x = -2
• x = 2
• x = -3
• x = 3

Solve: 9^8-x = 27^x-3

• x = 5
• x = -5
• x = 1/5
• x = -1/5

Solve:
5^{1/2x + 4} = 125

• 1
• 2
• -2
• 14

Tags

CCSS.7.EE.B.4A

In the compound interest formula A=P(1+r)^t what does the P stand for?

• The time

• The total amount

• The principal amount (original amount)

• The interest rate

Jacob borrows $500 from Abraham and agrees to have the loan compounded annually for 5 years with an interest rate of 2.5%. How much will the total amount be that Jacob owes?

• $565.70

• $262609.38

• $65.70

• $630.20

Henry deposits $750 into a college savings account that is compounded annually when his parents received as a stimulus package. If Henry lets the money sit in the account without adding or removing any and receives a 8.5% interest rate, how much money will he have total after 5 years?

• $1127.74

• $1535.24

• $2345.67

• $850.76

Tags

CCSS.HSF.BF.A.2

Trevor wants to have $4000 saved up in 3 years for a car. If he invests $1500 in a savings account that is compounded annually at an interest rate of 12%, will he have enough money at the end of the 4 years?

• Yes

• No

Which equation matches this graph?

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Tags

CCSS.HSF-IF.C.7E

Which graph matches the equation?

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Tags

CCSS.HSF-IF.C.7E