Expression that represents the change from $20 after the purchase of an item that costs d dollars is:
20-d
Answer:
84
Step-by-step explanation:
7 dollars a month. 12 months a year. 7x12=84.
84 dollars a year
If f(8)=4 that means that if you plug 8 on as x in whatever the equation of f is you will get 4 as answer therefore (8,4) is a point on the graph