JUST ALL OF PHYSICS. it is very confusing

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Acar travels 40m in 8 seconds find the car speed

When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data? a. type of fertilizer b. amount of flowers c. amount of water d. number of days that the plants grew