2/3 x - 1 = 9 - 1/6 x Im supposed to solve but i need some help

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Which of the following equations is equivalent to x/3-6/x=1