Answer:

Step-by-step explanation:
Given


Required
Write the equivalent cosine function
The general formula is:

Where


Substitute
for amplitude in 


Substitute 3 for period in 

<em>Multiply both sides by b</em>

<em>Divide through by 3</em>

Hence;
becomes

Answer:
5, 0
Step-by-step explanation:
Answer: D. contradicted the claims of supply-side economists and the Laffer Curve
Step-by-step explanation: In 1993 the federal government boosted income tax rates. The change in tax revenue that occurred in the seven years that followed: contradicted the claims of supply-side economists and the Laffer Curve.
I got 23 u might want to check it tho