What is the wavelength of an EM wave whose frequency is 4.56 MHz? Assume that the speed of light is 3.00 x 10 8 m/s. please explain the answer

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?