How do you simplify ab\9b

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

How do you determine whether a relationship represented as as graph is linear or nonlinear