Answer:
Step-by-step explanation:
Liz wants to drink 1.5 litres of water each day. She buys the water in packs of 6 bottles. Each bottle contains 0.5 litres of wa
2 answers:
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f(x) =
- 2
y =
- 2
This is the original equation, and now we have to find the inverse.
When finding the inverse, just flip the variables, x as y and y as x
f ⁻¹(x)
↓
x =
- 2
We have to isolate y as it is our f ⁻¹(x)
Take 2 to the other side { When you see subtraction, you do addition }
x + 2 =
Take 9 to the other side { When you see division, you do multiplication }
9 ( x + 2 ) = y
9x + 18 = y
f ⁻¹ (x) = 9x + 18
f(x) =
y =
This is the original equation, and now we have to find the inverse.
When finding the inverse, just flip the variables, x as y and y as x
f ⁻¹(x)
↓
x =
We have to isolate y as it is our f ⁻¹(x)
Take 2 to the other side { When you see subtraction, you do addition }
x + 2 =
Take 9 to the other side { When you see division, you do multiplication }
9 ( x + 2 ) = y
9x + 18 = y
f ⁻¹ (x) = 9x + 18
Answer:
No, he is wrong.
Step-by-step explanation:
Since, the total payment of a loan after t years,
Where,
P = present value of the loan,
r = rate per period ,
n = number of periods,
Given,
P = $165,000,
In loan 1 :
r = 3% = 0.03, t = 15 years,
So, the total payment of the loan is,
In loan 2 :
r = 4% = 0.04, t = 30 years,
So, the total payment of the loan is,
Since,
Hence, total amount repaid over the loan will be less for Loan 1.
That is, the friend is wrong.