3x + 7 + -X - 13
plz help

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Standard deviation of 19,29,21,22,23

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.