A convenience shop currently sells 1000 bottles of cold drink per month at R12 a bottle. For every R1 increase in price, 10 fewer bottles will be sold. At what price must the shop
sell the cool drink to make a total revenue of R14 550 per month?

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√, where h is the height (in feet) above the transmitter. estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. round your answer to the nearest tenth.