5x+1/4=15 1/4 what is the value of x

Which function is represented by the graph

Me i'm timed right now! a. (0,-5)b. (0,-3)c. (0,3) d. (0,5)

:malik received a $300 gift card from his grandparents and is using it only to pay for his karate lessons, which cost $30 per month. determine what amount, in dollars, remains on the card after 8 months.