In a class of 78 students, 41 are taking french, and 22 are taking german. of the students taking french or german, 9 are taking both courses. how many students are not enrolled in either course?

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.

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.

Francesca had 32 cups of flour and she uses 3/8. how much flour did francesca use? write the equation.