The square root of a number is between 18 and 19

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )