Which relation is a function? a) {(2,1),(3,1),(4,1),(5,1)]
b) {(1,2),(1,3),(1,4),(1,5)}
c) {(2,3),(3,2),(4,2),(2,4)}
d) {(1,6),(2,8),(3,9),(3,12)}

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Hi, can anyone show me how to do this problem? 100 points for this. in advance