Aquestion of life or death !

find the value of b that makes x^2+bx+81 a perfect square trinomial.

Pls an ice cream shop sells 5 times as many cake cones as waffle cones use variable x to represent the number of waffle the ice cream shop sells and use this variable to write an expression for the number of cake cones the ice cream shop sells. enter the expression for the number of cake cones the ice cream shop sells

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Which of the following is true for the relation f(x)=2x^2+1