A light flashes every 2 minutes, a second light flashes every 3.5 minutes, and a third light flashes every 4 minutes. If all three lights flash together at 8 p. m., what is the next time of the day they will all flash together? (Pay attention to the key words)

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