7(2x--3x) how do i simplify this expression?

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )

Pleas ! i just cant seem to get it right! choose: congruent or proportional choose: cf or ce or bc choose: segment addition postulate or cpctc

Multiple questions for the same graph find the lowest value of the set of data this box-and-whisker plot represents.12131516find the upper quartile of the set of data this box-and-whisker plot represents.20151618