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Answer:
A. 3/8 ft
B. width would decrease
Step-by-step explanation:
A. The area of a rectangle is given by the formula ...
A = LW
Solving for W, we find ...
W = A/L . . . . . width is inversely proportional to length for the same area
Using the given dimensions, we find the width to be ...
W = (3/10 ft²)/(4/5 ft) = (3/10)(5/4) ft
W = 3/8 ft
The width of the card is 3/8 ft.
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B. Width is inversely proportional to length for the same area, so an increase in length would result in a decrease of width.
