the graph of a trigonometric function intersects its midline at
(
−
1
2
π
,
3.3
)
(−
2
1

π,3.3)left parenthesis, minus, start fraction, 1, divided by, 2, end fraction, pi, comma, 3, point, 3, right parenthesis and it has a maximum point at
(
−
2
π
,
9.8
)
(−2π,9.8)left parenthesis, minus, 2, pi, comma, 9, point, 8, right parenthesis.
What is the period of the function?

answer: 0.1,0.85

step-by-step explanation:

jfkc

step-by-step explanation:

jhcxzbfzc

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.