Question

ravi received a $45.00 gift card for a photo center. he used it to buy prints that cost 20 cents each. the remaining balance, b (in dollars), on the card after buying x prints is given by the following function.\\( b(x) = 45.00 - 0.20x \\) what is the remaining balance on the card if ravi bought 15 prints? dollars

Explanation:

Step1: Identify the value of x

We know that Ravi bought 15 prints, so \( x = 15 \).

Step2: Substitute x into the function

The function for the remaining balance is \( B(x)=45.00 - 0.20x \). Substitute \( x = 15 \) into the function:
\( B(15)=45.00 - 0.20\times15 \)
First, calculate \( 0.20\times15 = 3.00 \)
Then, \( B(15)=45.00 - 3.00 = 42.00 \)

Answer:

42.00