Bruce owns a business that produces widgets. he must bring in more in revenue than  he pays out in costs in order to turn a profit. it costs $10 in labor and materials to make each of his widgets. his rent each month for his factory is $4000.he sells each widget for $25.how many widgets does bruce need to sell each month to make a profit?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables