Problema Solution
members of the choir are baking cookies for a fund-raiser. It costs $2.25 to make a dozen cookies, and the choir's intail expenses were $15.75. They sell the cookies for $4.50 a dozen . How many dozen do they have to sell to cover their costs?
Answer provided by our tutors
the total expenses for 'x' dozens of cookies are: 15.75 + 2.25*x
the income from 'x' dozens of cookies is: 4.50*x
the cover the costs the income needs to be not less then the expenses that is
15.75 + 2.25x <= 4.50x
by solving the inequality we find
x >= 7
click here to see the step by step solution of the inequality
they need to sell at least 7 dozens of cookies to cover their costs.