Santana Rey is considering the purchase of equipment for Business Solutions that would allow the company to add a new product to its computer furniture line. The equipment is expected to cost $$300,000$ and to have a six$-$year life and no salvage value. The equipment is expected to generate income of $$12,939$ and net cash flow of $$62,939$ in each year of its six$-$year life. Santana requires an $8\%$ return on all investments. $($PV of $$1,$ FV of $$1,$ PVA of $$1,$ and FVA of $$1)($Use appropriate factor$($s$)$ from the tables provided.$)($Negative net present values should be indicated with a minus sign. Do not round intermediate calculations. Round your present value factor to $4$ decimals and final answers to the nearest whole number.$)$

Required:

$1-$a$.$ Compute the payback period for this equipment.

$1-$b$.$ Compute the net present value for this equipment.

$1-$c$.$ Compute internal rate of return for this equipment.

$2.$ If Santana requires investments to have payback periods of four years or less, should she invest in this equipment?

$3.$ If Santana requires investments to have at least an $8\%$ internal rate of return, should she invest in this equipment?