Answer:
C
Step-by-step explanation:
perpecndicular means they intersect in right angle which is 90°, no matter how long lines are.
Since the equation says "cos(x-2)", we know that the horizontal displacement is 2 units.
Answer:
D. 100°
Step-by-step explanation:
A straight line is 180°. Add 50° and 30° (which is 80°) and subtract the total from 180°.
50 + 30 = 80
180 - 80 = 100
It would be better to buy 12 bars for 10 dollars and the rate would be $1.2. The rate for 5 bars would be $1.25.
Answer:

Step-by-step explanation:

If you want to solve this easily, you can just remove x and add 30x + 60x.

We know that 30 + 60 is 90. So we will add x to 90.

Now you have your answer!
Hope this helps!