The cost to produce 50 books for biology is $4100. If thescience department need

The cost to produce 50 books for biology is $4100. If thescience department need to make more book the cost is 5780 for 85books. Write an equation for the cost to produce the lab books interms of the number produced. If the Biology department had abudget of $7000 for the books how many can they produce?