Annually cumulating interest can be determined by the following formula:
r represents the interest rate as a decimal, and P represents the starting amount of money.
(a) P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.11 + 0.52 + 0.19 = 0.82
(b) P(X ≥ 1) = P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.52 + 0.19 + 0.12 + 0.06 = 0.89
(c) µ = 0×0.11 + 1×0.52 + 2×0.19 + 3×0.12 + 4×0.06 = 1.5
(d) σ² = (0²×0.11 + 1²×0.52 + 2²×0.19 + 3²×0.12 + 4²×0.06) - µ² = 1.07
σ = √(σ²) ≈ 1.03
C because the slope of f(x) is -2, and the slope of g(x) is -7
2.5 years = 30 months
7500$ in 30 months
x$ in 1 month
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x = (7500*1)/30 = 250
The answer is 250$/month.
Answer:
28%
Step-by-step explanation:
