Please show me steps to calculate this on a financing calculator

Given alternative investment's cash flows, find which alternative is better at x% Consider the following cash flows for two mutually exclusive investments: Which statement is true? if the financing rate is 15% then project B is the better of the two if the financing rate is 7.52% then projects A and B create the same amount of wealth if the financing rate is 7.5% then project A is the better of the two if the financing rate is 18.3% then project A is the better of the two if the financing rate is 21.6% then project B is the better of the two