What is the simplified form of (–3x3y2)(5xy–1)? a. 15x^2/y^2 b. –15x3y2*** c. –15x4y d. 15x4y my answer is b is it correct?

Ihave trouble finding the nth term of a linear sequence

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu