If a plus b equals 2x -2 and a -b equals 4x -8, find a and b

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 (monthly car loan payment per $1,000 borrowed) i need !

For what value of (y) is 3^3/3^y =1/9

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.