18 is D and 19 is C you're welcome
Use the following identities:

Also because the angle is in quadrant 3, sin must be negative.
Therefore

Subbing in tan = 0.958
Does the question include a picture?
Graphs like these (lines) come in the form y = mx + b where m is the slope and b is the y intercept. Y intercept is where the graph intersects the y axis so the value would be 5
Answer:
4
Step-by-step explanation:
Multiplication Property of equality.
multiply 5 on both side to have x alone on One side.