I'M BEGGING YOU. HELP ME. There is an image of the question.

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x.which term can she add to the polynomial that would not change its grestest common factor? check all that apply

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9