Write down 7 numbers that have a range of 10 and a mean of 12

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?

X-intercept=-5 y-intercept=2 the equation of the line is

41/17 as a decimal rounded to the nearest hundredth