Bonnie is making a poster with a length of 5 feet and a width of 2 feet for a school competition . She decides to add x feet to
the width of the poster as shown in the following diagram. How can the area of the new poster be expressed in expanded form?
1 answer:
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Answer:
4cos4x
Step-by-step explanation:
let's use cos
amplitude=4
period=pi/2
2pi/x=pi/2
x=4
no phase shift
y=4cos4x
pic from desmos
So y=2x is the only answer that fit y=kx, while k=2