The cost in dollars to produce x cups of lemonade is represented by the function c(x) = 10 + 0.20x. the revenue in dollars earned by selling x cups of lemonade is represented by the function r(x) = 0.50x. what is the minimum number of whole cups of lemonade that must be sold for the revenue to exceed the cost?

all group life insurance is term insurance. actually it is annual renewable term and it is rated on the average age and claims experience of the entire group, which is called "experience rating." remember, this type of insurance has a 31-day grace period and is convertible to whole life upon leaving employment. a contributory group plan requires that both the employer and the employees pay part of the premium. at least 75% of those eligible must participate, so the group is sure to get most of the healthy employees as well as those that are sick.

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a