We have that
y = (4/3)* cos (3/2)x----------> y = (4/3)* cos (1.5x)
using a graph tool
the answer
see the attached figure
5x + 55 = 2x + 100
3x = 45
x = 15
plug 15 into
5(15) + 55
75 + 55 = 130
130 + angle 2 = 180
angle 2 = 50
ANSWER
EXPLANATION
We want to simplify:

Recall the distributive property;
(a+b)(c+d)=a(c+d)+b(c+d)
We apply this property to get,

We expand to get,

This simplifies to,

The simplest form of the given expression is:
