I cant see ur attached thing
The answer is 315 as the formula is : a+b/2•h.
Just find the volume of a triangular prism.
volume=1/2*length*width*height.
45 x 5 = 225 so 225 students altogether on 5 buses
3/4 because tht equation is in the form of y=mx+b and M stands for slope and In waht u wrote The slope is 3/4