Which expression gives the distance between the points (5, 1) and (9,-6)?

Cara earns a base pay of $1800 per month at a car dealership plus a commission of 6% of her sales. what are caras total earning in a month in which she sells $40000 worth of merchandise

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The area of square garden is 300m squared. how long is the diagonal?