Which fraction does not represent a rational number? a. -77/78
b. -16/-9
c. 3/0

pls help me out

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Measure of angles 31 (x+4) (3x+9) me