Beth and ann are joking that their combined ages equal sam's age. if beth is twice ann's age and sam is 69 years old, what are beth and ann's ages?

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 expressions cannot be simplified to x – 2?

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?