2/3 × 42
5/12 x 26
11/15 x 20
3/8 x 54

First and correct answer gets brainlist!

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

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?

In which form is the following function written? y = - 2(x – 3)(x + 5)