Answer: The system of
equations that best models this situation are
y = 30x + 120
z = 75x + 15
Step-by-step explanation:
Let x represent the number of months for which John Urschel wants to use either plans of the gym.
Let y represent the total cost of using plan A for x months
Let z represent the total cost of using plan B for x months.
Plan A has a $120 sign-up fee and costs an additional $30 per
month. This means that the total cost of using plan A for x months is expressed as
y = 30x + 120
Plan B costs $75 per month with a signup fee of $15. This means that the total cost of using plan B for x months is expressed as
z = 75x + 15
<h2>✏️
Development:</h2>
✍ Having as t₃ =10 and t₁₀ = -4. We have to find the common ratio.
❑ If, in front of the sequence from 3 to 10, there are 7 numbers, that is, 7 terms, we have to find a pattern, what I used was this one.
We see that in the calculation, the only number that fits is -2.
➤ Because if we stop to think about it, we have -2 of common ratio among these 7 terms is -14, so 10-14 = -4
So the hypothesis is correct!
➜ Being right as -2 and resuming the terms of 10, we have:
So t₁₂ is equal to -8.
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Answer:x=45
Step-by-step explanation: