q = 10p because all of them are multiplied by ten
Answer: option a.
Step-by-step explanation:
By definition, we know that:

Substitute
into the first equation, solve for the cosine and simplify. Then, you obtain:

As
then
:

Now we can find
:

-10= 7X - 42
-10 + 42 = 7X
32 = 7X
X = 32/7
X = 4.57
Step 1. Add 6 to both sides
a ≥ 1 + 6
Step 2. Simplify 1 + 6 to 7
a ≥ 7