Given the cost function upper c (x )and the revenue function upper r (x ), find the number of units x that must be sold to break even. upper c (x )equals14xplus72 comma 000 and upper r (x )equals18x.

18,000 units .

Step-by-step explanation:

The cost function C(x) and the revenue function R(x) are, respectively:

In order to break even, the revenue function, for a given value of "x" must yield a value equal or greater than the cost function. Simply equal both functions to find a minimum value of x needed to break even:

18,000 units must be sold in order to break even.

hi! i think the answer is 1/2 : )