Interpreting Exponential Functions

y = a(b)^x, what does that a represent?

• the y-intercept
• the number at which the y values are being multiplied

Tags

CCSS.HSF.LE.B.5

y = a(b)^x, what does that b represent?

• the y-intercept
• the number at which the y values are being multiplied

Tags

CCSS.HSF.LE.B.5

Fido did not have fleas when his owners took him to the kennel. The number of fleas on Fido after he returned from the kennel grew according to the equation f = 8(3)ⁿ, where f is the number of fleas and n is the number of weeks since he returned from the kennel. (Fido left the kennel at week 0). How many fleas did Fido pick up at the kennel?

• 8
• 3
• 24
• 72

Fido did not have fleas when his owners took him to the kennel. The number of fleas on Fido after he returned from the kennel grew according to the equation f = 8(3)ⁿ, where f is the number of fleas and n is the number of weeks since he returned from the kennel. (Fido left the kennel at week 0). What is the growth factor for the number of fleas?

• 3
• 8
• 2
• 24

Tags

CCSS.HSF.LE.B.5

Fido did not have fleas when his owners took him to the kennel. The number of fleas on Fido after he returned from the kennel grew according to the equation f = 8(3)ⁿ, where f is the number of fleas and n is the number of weeks since he returned from the kennel. (Fido left the kennel at week 0). How many fleas will Fido have after 10 weeks if not treated?

• 472,392
• 59,049
• 240
• 3,221,225,472

What is 4% written as a decimal?

• .04
• .4
• 4
• .004

Suppose you deposit $1,000 in a savings account that earns interest of 6% per year on the current balance in the account. Which is the correct equation to model this situation?

• y = 1000(1 + .06)^t
• y = 1000(1 - .06)^t
• y = 1000(1 + 6)^t
• y = 1000(1 - 6)^t

Suppose the acreage of a forest is decreasing by 2% per year because of development. If there are currently 4,500,000 acres of forest, determine the amount of forest land after 5 years.
y = a(1 + r)^t or y = a(1 + r)^t 
Hint: Write equation then replace t with 5. 

• 4,067,644
• 90,000
• 5,904,924
• 4,608

Tags

CCSS.HSF-LE.A.1C

What is the equation for the table?

• y = 1(2)^x
• y = 2(1)^x
• y = 2(3)^x
• y = 3(2)^x

Tags

CCSS.HSF.LE.A.2

What is the equation for the table?

• y = 4(2)^x
• y = 2(4)^x
• y = 2(8)^x
• y = -2(4)^x

Tags

CCSS.HSF.LE.A.2