Could I get help with answering (B). Thank you

Math 110 Course Resources - Applications of Definite Integrals Course Packet on consumer, producer and total surplus The demand and supply functions for Penn State women's volleyball jerseys are: p = d(x) = -5x2 - 23x + 586 p = s(x) = x2 + x+ 10 where x is the number of hundreds of jerseys and p is the price in dollars. (a) Find the equilibrium quantity. Equilibrium quantity, x = 8 , which corresponds to 800 jerseys. (b) Compute the total surplus at the equilibrium point. Total surplus = 82 X dollars