Answer:
8 dollars per hour
Step-by-step explanation:
If you divide 18 to 144 the answer is 8
Yes the x values are all different, if two were the same then it would not be one but in this case it is
You start at 0 on the unit circle the cos of 0 =1, but at cos 0 there is no angle at all so there is no y value so at cos 0 y=0, 180 is the opposite direction of the starting point which is 0 so the x value of cos180= -1 but there is still no upward or downward angle ie.. y value. so the y value = 0 at 0 and 180. answer is 0
$21.45 x 6 = $128.7
$128.7 + $10.60 = $139.3
Charlie will have saved $139.3 in 7 months
