2/5 of the 7th graders earned a grade of B+ or higher in math class. If 42 seventh graders scored at least a B+, how many students are in 7th grade?

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³

Find the nonpermissible replacement for binthis expression.b2/5b +5

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )