Answer:
$0.25
Step-by-step explanation:
Site A pays ...
... $0.65 × 5 = $3.25
Site B pays ...
... y = 0.60·5 = 3.00 . . . dollars
Site A pays more by ...
... $3.25 - 3.00 = $0.25
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You can also look at the difference in unit rates. Site A pays $0.65 per photo, while site B pays $0.60 per photo, a difference of $0.65 - 0.60 = $0.05 per photo. Then 5 photos will be worth $0.05 × 5 = $0.25 more at Site A.
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(cx)2-(dy) 2
Formula a2-b2= (a+b) (a-b)
By given formula
(cx)2 - (dy) 2 = (cx+dy) (cx-dy)
x=350−40y
Explanation:
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