Sam's age is 125% of mary's age. mary's age is p% of sam's age. what is the value of p?

Can you draw an isosceles triangle with only one 80 degree angle?

Answer this question! 30 points and brainliest! only if you know the answer.

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?