Answer:
length = 17cm, width = 10cm
Step-by-step explanation:
2L + 2w = 54
L = w + 7
Substitute:
2(w + 7) + 2w = 54
2w + 14 + 2w = 54
4w = 40
w = 10
L = 10 + 7 = 17
Amp is the number in front of sine so its 1/2 aka D :)
I think the answer may be D. You can graph the points and draw a line through the points to see what other points are intersected by the line.
Y=-2/3x-4
Linear equation formula: y=mx+b
