Of the students in the cafeteria, 40% are girls. There are 20 girls in the cafeteria. How many students are in the cafeteria? A. 28

B. 50

C. 60

D. 70

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet