Atour bus normally leaves for the destination at 5 p. m. for a 270 mile trip this week however the bus leaves at 5: 30 p. m. to arrive on time the bus driver drive 6 miles per hour faster than usual what is the buses usual speed

For the function, f(x) = -5x 2, find f(-4).

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.