Istruggle with these type of things

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?