A limited edition poster increases in value each year with an initial value of $18. After one year and an increase of 15% per year, the poster is worth $20.70. Which equation can be used to fund the value, y, after x years?

We have been given that a limited edition poster increases in value each year with an initial value of $18. After one year and an increase of 15% per year, the poster is worth $20.70.  

We will use exponential growth formula to find our required equation.

We know that an exponential function is in form , where

a = Initial value,

r = Growth rate in decimal form,    

x = Time.    

Let us convert 15% into percentage.

Initial value is 18.

Upon substituting these values in above formula, we will get:

Let us check our function by finding the value of poster after one year as:

Since the value of poster after 1 year matched with our findings, therefore, the equation can be used to fund the value, y, after x years.

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answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d