Pls help! i don’t understand because i wasn’t paying attention in class :(

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.

Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?

A11 gram sample of a substance that’s used to treat thyroid disorders has a k-value of 0.1247