Ch.8 Exponential Functions Review

CL 8-134. An adult ticket to the amusement park costs $24.95 and a child’s ticket costs $15.95. A group of ten people paid $186.50 to enter the park. How many were adults?

• There were 3 adults @ $24.95 per ticket.

• There were 7 adults @ $24.95 per ticket.

• There were 7 children @ $15.95 per ticket.

• There were 3 children @ $15.95 per ticket.

You and a friend go to Tacos Galore for lunch. You order three soft tacos and three burritos and your total bill is $11.25. Your friend's bill is $10.00 for four soft tacos and two burritos. How much do soft tacos cost? How much do burritos cost?

• Soft Tacos cost $1.25

• Burritos cost $2.50

• Soft Tacos cost $2.50

• Burritos cost $1.25

A house purchased for $120,000 has an annual appreciation of 6%. What is the multiplier that should be used?

• The multiplier is 1.06

• The multiplier is 0.60

• The multiplier is 1.4

• The multiplier is 0.4

A house purchased for $120,000 has an annual appreciation of 6%. What is an exponential equation in the form f(x) = ab^x that can be used to model the situation?

• y=120,000(0.6)^x

• y=120,000(1.06)^x

• y=120,000(0.4)^x

• y=120,000(1.4)^x

The number of bacteria present in a colony is 180 at noon, and it increases at a rate of 22% per hour. What is the multiplier?

• The multiplier is 1.78

• The multiplier is 0.78

• The multiplier is 22

• The multiplier is 0.22

• The multiplier is 1.22

The number of bacteria present in a colony is 180 at noon, and it increases at a rate of 22% per hour. What is an exponential equation in the form f(x) = ab^x that can be used to model the situation?

• y=180(0.22)^x

• y=180(1.22)^x

• y=180(22)^x

• y=180(0.78)^x

The value of a car with an initial purchase price of $12,250 depreciates by 11% per year. What is the multiplier?

• The multiplier is 1.89

• The multiplier is 0.89

• The multiplier is 11

• The multiplier is 1.11

• The multiplier is 0.11

The value of a car with an initial purchase price of $12,250 depreciates by 11% per year. What is an exponential equation in the form f(x) = ab^x that can be used to model the situation?

• y=12,250(0.11)^x

• y=12,250(0.89)^x

• y=12,250(1.1)^x

• y=12,250(1.11)^x

An investment of $1000 earns 6% annual interest, compounded monthly. How do I determine the multiplier per month?

• 1+ 94%/12

• 1- 6%/12

• 1+ 6%/12

• 1+ 6%

An investment of $1000 earns 6% annual interest, compounded monthly. What is an exponential equation in the form f(x) = ab^x that can be used to model the situation?

• y=1000(1.05)^12x

• y=1000(1.5)^12x

• y=1000(1.005)^x

• y=1000(1.005)^12x