Can someone help on 3? i got 455 5(p)13
1x+30
1 • x = 1 • 5 = 5
5 + 30 = 35
35(13) = 455

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

What are the excluded values? m+5/mn+3m

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)