Can any one help me please Amy thing you can do to help me please

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Which of the following is the graph of y= square root -x-3