A clothing business finds there is a linear relationship between the number of shirts, n it can sell and the price, P, It can charge per shirt. In particular, historical data shows that 3 thousand shirts can be sold at a price of $78 each, and that 7 thousand shirts can be sold at a price of $62 each. Find the equation of the form P(n) = mn+b that gives the price P they can charge for n thousand shirts. Select the correct answer below: P(n) = On + 78 OP(n)=-4n +95 O P(n)=-4n+90 OP(n) = On+62 OP(n)=-6n+104 OP(n)=-6n+96