What is the surface area of this design?

1. convert. simplify your answer and write it as a proper fraction or as a whole or as a mixed number. 4oz=_ pounds 2. find 1/3 of 66

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 is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?