Answer: a
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
F(x)=((1/4)x+9)/10 Because f of x = f(x), equals the quantity means =, one-fourth x is just (1/4)x, plus 9 is + 9, and all over ten means take everything previously said over ten.
We have been given 4 points
. We are asked yo plot these points on coordinate plane and find the area of the figure.
Upon plotting our given points, we will get a rectangle as shown in the attached file.
We can see that the width is 5 units that is difference between y-coordinates of point
.

We can see that the length of rectangle is 6 units that is difference between x-coordinates of point
.

We know that area of rectangle is length times width.



Therefore, the area of the figure would be 30 square units.
Total amount = 15 x 7 = 105
105 ÷ 10 - 10.5
The amount paid would then be 105-10.5=94.5
Answer is C
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