Khan academy need help with this

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

What point is the projection of q on a) r b) s c) t

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h