An efficiency study conducted for elektra electronics showed that the number of space commander walkie-talkies assembled by the average worker during the morning shift t hr after starting work at 8 a. m. is given by n(t) = −t3 + 6t2 + 15t (0 ≤ t ≤ 4).
a. find the rate at which the average worker will be assembling walkie-talkies t hr after starting work.
b. at what rate will the average worker be assembling walkie-talkies at 10 a. m.?
c. how many walkie-talkies will the average worker assemble between 10 a. m. and 11 a. m.?

b, i believe, but not sure.

none of these

step-by-step explanation:

23 + 34 add up to 57 so just inform the teacher of this really stupid mistake

for future students the answer is b

hope i

-lavira: )

(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.