Pumping iron: 10x+90=0
Fit for life: 15x+50=0
Set them equal to each other. 10x+90=15x+50. Solve for x. Subtract 50 from both sides, get 10x+40=15x, then subtract 10x from both sides, getting 40=5x. Divide 5 from both sides to isolate x, x=8. After 8 months the two gyms will cost the same.
Answer: 0.27
You can mark me brainliest on the other question you know
Step-by-step explanation:
Answer:

Step-by-step explanation:

We'll use rule of exponents to simplify expression.

Now, use the commutative property of multiplication.

In order to multiply power of the same base, we add their exponents.

→ Add exponents:

→ Multiply 3* -8

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Answer:
the first one
Step-by-step explanation: