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bobbye001
24.02.2021 •
Mathematics
Let f (x) = 6x – 4x2 – 7x3 and g(x) = 9x2 – 53. Find (f +g)(x) and (f - 9) (x). Then evaluate f + g and f -g for 2 = -1.
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Ответ:
h(x) * s(x) = 200(1.05)^(x - 1)
Step-by-step explanation:
Our interest equation is s(x) = (1.05)^(x - 1). This is actually a part of a bigger formula for calculating the amount of money accumulated including interest:
A = P(1 + r)^n, where A is the total, P is the principal amount (initial amount), r is the interest rate, and n is the time
Here, we technically already have the (1 + r)^n part; it's just (1.05)^(x - 1). The principle, though, will actually be the 200 because she starts out at $200.
Thus, to combine these, we simply multiply them together to get:
h(x) * s(x) = 200(1.05)^(x - 1)