The mass of an electron is approximately 9.1*10^-31 kilograms. the mass of a proton is approximately 1.7*10^-27. approximately how many times greater is the mass of a proton than the mass of an electron.
a) 1900
b) 5500
c) 19000
d) 55000

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