Answer:
8%
Step-by-step explanation:
$30 divided by 100= 0.3/1%
0.3x8=$2.40
$30+$2.4=32.40
Answer:=−91u
4cos4x
let's use cos
amplitude=4
period=pi/2
2pi/x=pi/2
x=4
no phase shift
y=4cos4x
pic from desmos