Answer:
Step-by-step explanation:
Remark
They are asking you to combine like terms. The total should be 180.
Givens
2 angles
Total 180
Solution
8x - 3 + 4x + 3 = 180 The threes cancel. So add what's left. They are of opposite signs, so they cancel.
12x = 180 Divide both sides by 12
12x/12 = 180 /12
x = 15
Answer:

Step-by-step explanation:
Remmeber this:

The y-intercept is where the lone goes through the y-axis.
F(x) is defined for "all real numbers."
(3/20) x 3 (4/15) x4
9/60 + 12/60
= 21/60
=7/20