Step 1 :Calculate the exponent: \(-0.014 * 9 = -0.126\)
Step 2 :Calculate the value of e raised to this power: \(e^{-0.126} \approx 0.881\)
Step 3 :Substitute this back into the formula: \(PV = 7000 * (1 - 0.881) / 0.014\)
Step 4 :Calculate the term in the parentheses: \(1 - 0.881 = 0.119\)
Step 5 :Multiply by the annual income: \(7000 * 0.119 = 833\)
Step 6 :Divide by the interest rate: \(833 / 0.014 \approx 59,500\)
Step 7 :The present value of the additional income that the machine will generate over its lifespan is approximately $59,500.
Step 8 :Since the cost of the machine is $56,000 and the present value of the additional income is greater than the cost, the company should buy the machine.
Step 9 :\(\boxed{\text{Therefore, the answer to the question 'Should the company buy the machine?' is yes.}}\)