Ineed with question 9 and 10 this homework is hard

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

Which of the following best describes the delian problem?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no