A chef cooked 7 kilograms if the guests only ate 3 quaters of the amount he cooked how much did they eat

Match each expression with its simplified form.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?