What must be a factor of the polynomial function f(x) graphed one the coordinate plane below

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?