Kim can wash 150 window panes in 3 hours. Gary can wash 110 window panes in 2 hours. Kim and Gary work together to wash a total of 290 window panes. If they continue to wash at the same rate, how long will it take them to wash the 290 window panes? Give your answer in hours and minutes, to the nearest minute.

(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.

they can either have 0,1, or infinite solutions

step-by-step explanation: