What is the HCF of 21m³n - 14m²n³ + 35m²n² ?​

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.