If A = 3x + 5x - 6 and B = -2x² – 6x + 7, then = A-B equals

1 -5x? - 11x + 13

2 5x + 11x – 13

3 -5x? – x + 1

4 5x? – x +1

Distribution Method

(- xª +2r³ + 3x²) - (2r4 + 5x³ + x²)

b

step-by-step explanation:

(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.

step-by-step explanation:

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