If evelyn were to paint her living room alone, it would take 44 hours. her sister rachel could do the job in 55 hours. how many hours would it take them working together? express your answer as a fraction reduced to lowest terms, if needed.

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the