Karen received a $50.75 gift card for a photo center. She used it to buy prints that cost 10 cents each. The remaining balance,
B (In dollars), on the card after
buying x prints is given by the following function
B(x) = 50.75 -0.10x
What is the remaining balance on the card if Karen bought 30 prints?
buying x prints is given by the following function
B(x) = 50.75 -0.10x
What is the remaining balance on the card if Karen bought 30 prints?
1 answer:
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Answer:
A)
Step-by-step explanation:
Use the two-points formula for the slope of a line.
We know that the points (2,-2) and (9,3) are on the line. If (a,b),(c,d) are points on a line then the slope m is defined by the equation . In this case, a=2,b=-2,c=9 and d=3 then the slope is
.