Answer:
amplitude = 3
Step-by-step explanation:
the amplitude is the vertical distance from center of the wave to the crest or the trough
Answer:
37.5, i think
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
Fill in the variable value and do the arithmetic.

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Of course, the fraction can be simplified first:

Answer:
in order from left to right: 0, 10, 8, 2
Step-by-step explanation:
r3+3r2=r3
3+3(-1)=0
4+3(2)=10
5+3(1)=8
5+3(-1)=2