Answer: -2.1
Step-by-step explanation:
9514 1404 393
Answer:
g(x) = 3x +5
Step-by-step explanation:
The inverse function can be found by solving ...
x = f(y)
x = 1/3y -5/3 . . . . . use the definition of f(x)
3x = y -5 . . . . . . . . multiply by 3
3x +5 = y . . . . . . . .add 5
Then the inverse function is ...
g(x) = 3x +5
The amount invested in each company is :
- Amount invested in PP = $2400
- Amount invested in TT = $(10000 - 2400) = $7600
Using the simple interest relation:
Simple interest = principal × rate × time
Total amount = 10000
Let :
principal invested in PP = r
HENCE, amount invested in TT = 10000 - r
Total interest earned on both investments = $620
PP investment return + TT investment return = 620
(r × 10% × 1) + (10000 - r × 5% × 1) = 620
0.1r + 500 - 0.05r = 620
0.05r = 620 - 500
0.05r = 120
r = 120 / 0.05
r = 2400
Hence,
Amount invested in PP = $2400
Amount invested in TT = $(10000 - 2400) = $7600
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