Jack made $480 working 40 hours last week. Jill made $260 working 20 hours last week. Which equation shows how much JACK made? A y = 12x B. y = 13x C. y = 14x D. y = 15x

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

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?