the answer have to be would be (-3, 1)
If Mike is willing to pay no more than an effective rate of 8.000% annually, the loans that meet his criteria are loan X and loan Z. Of those two, the lowest would be loan X. I hope the answer will help you :)
The number is 24. If 8 is one third of the number, you multiply 8 by 3 to find the number, which is 24.