I NEED HELP WITH THIS PLEASEE

He concluded that a heavier object dropped from the same height as a lighter object will land

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?

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