Ill has worked out a system of equations to represent the expenses and revenue for running her lemonade stand. C = 21 + 0.10n

C = 0.85n

How many glasses of lemonade, n, must Jill sell to break even?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip