Write an equation of the parabola in vertex from y=a(x-h)^2 +k that passes through (-7,-15) and has vertex (-5,9).

Find the third, fifth and seventh term sequence described by each rule a(n)=n+1

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when equals y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15