$45 was spent on groceries. 45 is 3/4 of 60
Answer:
130/81
simplified: 1 49/81
Step-by-step explanation:
I did the math
The domain of a function is the set of all acceptable input values (X-values). The range of a function is the set of all output values (Y-values).
Let each side perpendicular to the river be "x".Then the side parallel to the river is "400-2x".
The formula for Area = width*length
A(x) = x(400-2x)
A(x) = 400x - 2x^2
You have a quadratic with a = -2 and b = 400
Maximum Area occurs where x = -b/2a = -400/(2*-2) = 100 ft. (width)
length = 400-2x = 400-2*100 = 200 ft (length)
