Which of the following has one solution?

10x+5=3(5x+7)
2(4+x)=8+2x
2(6+x)=14+2x

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.

Examine the following sets of events. set a: {1, 5, 7, 9, 14} set b: {2, 5, 6, 8, 14, 17} which of the following represents the intersection of set a and set b ? {∅} {5, 14} {1, 2, 5, 6, 7, 8, 9, 14, 17} {1, 2, 6, 7, 8, 9, 17}

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall