a fish swam 75 feet to the bottom of the river. The fish then swam up 35 feet towards the surface of the river and stopped. How deep is the fish in the river? ​

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