The daily cost of producing x high performance wheels for racing is given by the following function, where no more than 100 wheels can be produced each day. what production level will give the lowest average cost per wheel? what is the minimum average cost?

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?