A mobile virtual reality (VR) headset is being sold at a local department store for $33.75. This is the cost function associated with the headsets, where x represents the number of headsets manufactured and sold: C(x) = 28.15x + 355. How many VR headsets does the store need to sell to break even?

63 headsets.

Step-by-step explanation:

It is given that, a mobile virtual reality (VR) headset is being sold at a local department store for $33.75.

Let  x represents the number of headsets manufactured and sold.

So, the revenue function is

           ...(i)

The given cost function is

        ...(ii)

In break even point the value of profit is zero. It means revenue and cost are equal.

Divide both sides by 5.6.

Therefore, the store need to sell 63 headsets.

2nd one in the first row is correct

42.4

step-by-step explanation:

convert to decimal