What is the relationship between the 5s in the number 755,371

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

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 )

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?