A circular window is drawn on architectural plans where each unit is a foot on a coordinate grid. The window is modeled by the equation (x - 4)² + (y - 12)² = 9. The equation indicates that the center of the window is 4, 6, 9, 12
feet from the ground and the distance the window spans is 3, 4, 6, 12
feet.

Right answers only just comment if you don't understand

the f

last graph i believe

step-by-step explanation:

worked it out i believe

answer: your answer is a

(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.