mobile tech manufactures cell phone accessories. A particular item in their product line costs $40 each to manufacture. the fixed costs are $120,000. the demand function is q=-120 p+8000, where q is the quantity the public will buy given the price p.

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?