Y^2+18y+81=0

a) {9}
b) {9,-9}
c) {-9}
d) {0,-1}

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

How many glue sticks are in a basket containing 96 scissors, if the ratio of glue sticks to scissors is 19 to 57.

The monetary value earned for selling goods or services to customers is called a.) revenue b.) assets c.) money d.) accounting