Answer:
<em>The products did cost $173.9 in 2010</em>
Step-by-step explanation:
<u>Exponential function</u>
Two variables y and x are related as an exponential function if they comply:
where C is the initial value of F, r is the ratio, and k is a proportional constant.
The situation described in the question is modeled as
Where F is the final value of the cart of groceries in 2010, C = $150 is its value in 2005, r is the yearly rate of increase. n is the number of years
. So
If we set n=5 (from 2005 to 2010):
The products did cost $173.9 in 2010