Answer:
(2, 120° )
Step-by-step explanation:
To convert from rectangular to polar form, that is
(x, y) → (r, Θ ), use
r =
Θ = (
)
here (x, y ) = (- 1, )
r = )^2
= =
= 2
Θ = (
) = 60° ← related acute angle
Note (- 1, ) is in the second quadrant so Θ must be in the second quadrant.
Θ = 180° - 60° = 120°
(- 1, ) → (2, 120°)
Answer:
Step-by-step explanation:
1) Remove parentheses.
2) Regroup terms.
The exponential equation that models this situation is:
.
A decaying exponential function is modeled by:
In which:
For this problem, the parameters are:
A(0) = 18000, r = 0.15.
Hence the equation for the value of the car over the next 5 years is:
.
More can be learned about exponential functions at brainly.com/question/25537936
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