(1.2x - 3/4y) - (-3/5x + 2.25y)

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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?