Find the inverse of function f.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Can someone check if i did this correct. it’s number 4 if you’re wondering.

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?