Nicole purchased a prepaid phone card for $45.75. Calls cost 10 cents a minute using this card. The credit, C (in dollars), left on the card after it is used for x
minutes of calls is given by the following.
C = 45.75 -0.10%
How much credit is left on the card after Nicole uses it for 15 minutes of calls?

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23