How do you find the Remainder when a polynomial in x is divided by a binomial of the form x-r?

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

Ihonestly have no clue if it's each or none.