Seven feet below sea level is farther below sea level than 4 1/2 feet below sea level

Which of the following is the result of expanding

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122