decay and growth exponential

In the formula y = a(1±r)^t, what does the "a" represent?

• The total after the increase or decrease

• The initial amount

• The Rate of Change

• The number of times the change has happened over time

Tags

CCSS.HSF-IF.C.8B

In the formula y = a(1±r)^t, what does the "t" represent?

• The total after the increase or decrease

• The initial amount

• The Rate of Change

• The number of times the change has happened over time

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.B.5

In the formula y = a(1±r)^t, what does the "y" represent?

• The total after the increase or decrease

• The initial amount

• The Rate of Change

• The number of times the change has happened over time

Tags

CCSS.HSF-IF.C.8B

Given the function f(x) = 0.92^x, is this a growth or decay function?

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Given the function f(x) = 1.07^x, is this a growth or decay function?

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Given the function f(x) = 1.00005^x, is this a growth or decay function?

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

A publishing industry report predicts that magazine subscriptions will drop by 10% each year. If this prediction is correct, then how many subscribers will a magazine with 98,000 subscribers have in 10 years? (Round to the nearest whole number if necessary).

• 34,170

• 16,348

• 7690

• 76,023

Tags

CCSS.HSF-LE.A.1C

Jenny has $20 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much interest will she earn in 2 years?

• $2.05

• $45.79

• $1.99

• $7.51

Tags

CCSS.HSF.BF.A.2

Lauren has $90 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much will she have in 2 years?

• $99.23

• $21.98

• $56.46

• $9.21

Tags

CCSS.HSF-LE.A.1C

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x

• y = 15(1 + 0.35)^x

• y = 15(0.35)^x

• y = 35(1+ 0.15)^x

Tags

CCSS.HSF.LE.A.2