1) The point (2,-1) is on the graph of which parabola?
a) y=x^2 +2x+1
b) y = x² – 2x-1
c) y=x² + 2x-1
d) y=x^2- 2x +1

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?