Every ten years, the bureau of the census counts the number of people living in the united states. in 1790, the population of the u. s. was 3.93 million. by 1800, this number had grown to 5.31 million. write an exponential function that could be used to model the u. s. population y in millions for 1790 to 1800. write the equation in terms of x, the number of decades since 1790.

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