Write and solve an inequality to find the values of x for which the perimeter of the rectangle is less than 104.
x+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?

Can someone me and do the problem plz so i can understand it more better

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false