Answer:
C
Step-by-step explanation:
We know it's direct variation using the direct variation equation.

Where k is the constant.
Since 7 times x is the y values, 
Now we can substitute 7 into k of the direct variation equation.

The mountain bike cost $189 after both discounts
Answer:
17
Step-by-step explanation:
it has to be under 90 degrees
Answer:
y ≥ −4x − 2
Step-by-step explanation: