X^2+15x+44=0 i need to solve this, or is there a solution?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

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?