Select all the correct answers. Which equations represent functions?
2x+3y= 10
4x= 16
2x=3 = 14
О 3y= 18

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9