ANSWER
The correct choice is A.
EXPLANATION
The given cosine function is:

This function has an amplitude of 2.
Hence it must have range,
-2≤f(t)≤2
It has a period of

Hence the function must complete one cycle on the interval,
[0,½π],
[½π,π],
etc.
The negative sign shows a reflection in the y-axis but since the cosine function is even, the function retraces itself.
The correct choice is A
I dont really know for certain, but if I had to guess, I would say answer choices B and D.
Answer:
(-1,42)
Step-by-step explanation:
ahaha i got it wrong then it told me the actual answer
Answer:
true
Step-by-step explanation:
There is no distribution (unless you count substitution) in the second set of terms.
Edit: I think I get what your question is now. You are supposed to distribute to every term inside the parenthesis (false)
Answer: 29
Step-by-step explanation:
29 ÷ 8 = 3 remainder: 5
I solved using long division.