Please help me with this question i am timed
please find the value of u.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

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.

Which of the following is the graph of y= square root -x-3