What is the slope of the line?
1 answer:
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Answer:
Step-by-step explanation:
General equation of geometric sequence:
Given:
- a₁ = 100
- a₂ = 20
- a₃ = 4
Common ratio:
Therefore:
Given:
Per month fee = $55
One-time recital fee = $165
The equation represents the $495 total cost that Barbara paid to Dance Unlimited.
To find:
We need to find the number of month Barbara receive dance lessons from Dance Unlimited.
Solution:
We have,
Here, m is number of months. We need to isolate m.
Subtract 165 from both sides.
Divide both sides by 55.
The value of m is 6. So, the required number of month Barbara receive dance lessons from Dance Unlimited is 6.