80%, percent of Steph's annual income is from her full-time job.
What fraction of Steph's annual income is from her full-time job?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.