Evaluate (solve) the power: 2^9

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Find the minimum value of p=10x+26y the constraints are x+y less than or equal to 6, 5x+y greater than or equal to 10, x+5y greater than or equal to 14

How much candy at $1.16 a pound should be mixed with candy worth 86¢ a pound in order to obtain a mixture of 60 pounds of candy worth a dollar a pound?