If on a scale drawing 5 inches represents 80 feet, then 3/4 inch would represent how many feet?

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)