OxtFoenem
05.11.2020 •
Mathematics
The total cost of tiling a rectangular patio involves the cost of tiles and labor charges. The
length of the patio is 5 feet more than its width, x. If the expression 10x(x + 5) + 300
gives the total cost of tiling, what does 10 represent?
A. labor charges
B. the total cost of the tiles
C. the area of the patio in square feet
D. the cost of the tiles per square foot
Solved
Show answers
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Ответ:
$1.75
Step-by-step explanation:
(2,3.5) (4,7) pick two points
y=kx+m or y=mx+b
k=y2-y1/x2-x1
7-3.5=3.5
4-2=2
3,5/2=1.75
y=1.75x+m
7=1.75×4+m
m=0
The equation will be y=1.75x+0
we want to know what 1 pen cost
y=cost
x=number of pens
y=1.75×1+0
y=1.75