Which expression is equivalent to 36x^2-100

The verbal translation for the difference of m and 7 increased by 15

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.

Tatiana wants to give friendship bracelets to her 32 classmates. she already has 5 bracelets, and she can buy more bracelets in packages of 4. write an inequality to determine the number of packages, p, tatiana could buy to have enough bracelets.