Answer:
The total number of the payments is 18 ⇒ answer A
Step-by-step explanation:
* Lets revise the rule of compounded monthly payment
→ , where
- A is the loan amount
- r is monthly interest in decimal (R/12*100))
- n the total number of payments
∵ A = $1100
∵ EMI = $71.5
- Interest rate is 19.2% APR
∵ r =
- Substitute these values in the rule to find n
∴ 71.5 =
- By using cross multiplication
∴ 71.5[1 - ] = 17.6
- Divide both sides by 71.5
∴ 1 - =
- Subtract 1 from both sides
∴ - = -
- Multiply both sides by -1
∴ =
- By using cross multiplication
∴ 49[ ] = 65
- Divide both sides by 49
∴ =
- Insert log for both sides
∴ ㏒ = log( )
- Put n in-front of the ㏒
∴ n㏒(1.016) = ㏒( )
- Divide both sides by ㏒(1.016)
∴ n = 17.8 ≅ 18
* <em>The total number of the payments is 18</em>
Mean is when you add all of them together and divide by the amount of data you collected. Mean is considered the average. So, all of them added together would be 14. Divide that by 7. You should get 2 and that is the average.
Y = 7x + b
2 = 7 + b, b = -5
Y = 7x - 5
Step-by-step explanation: first one goes to 2 second one goes to 0 and third one goes to 6 I said "get help" on khan academy
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