What number gives a result of −2 when 9 is subtracted from the quotient of the number and 4

Which expression is equivalent to 2x^2+7x+4?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Write the equation in logarithmic form 8^x=64