Are there any prime numbers that are also square numbers

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined