If a = 4 and b = 5, what is the value of the following expression? 6a + 3b - 8

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible