Find the sum of -3x^2-x-10 and 10x^2+x-10

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?