The value of a collector’s item is expected to increase exponentially each year. the item is purchased for $500. after 2 years, the item is worth $551.25. which equation represents y, the value of the item after x years?

y = 500(0.05)x

y = 500(1.05)x

y = 500(0.1025)x

y = 500(1.1025

Step-by-step explanation:

Given:  The value of a collector’s item is expected to increase exponentially each year.

The exponential growth equation is given by :

, where A is the initial cost , b is the growth factor per year and x is the number of years.

The cost of item A= $500

After 2 years, the item is worth $551.25 (y), then we have the following equation

When we substitute the values of A and b  in the standard equation, we get  equation represents y, the value of the item after x years will be:

is it 35

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!