Veronique found the difference of a number and 8. which expression models the situation?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

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.