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:
J = 33
Step-by-step explanation:
43 - 2k = 33
43 - 10 = 33
33 = 33
The correct answer is 18696 ft/hour
Answer:
I believe the answer is 145
725÷5= 145