True or false? Explain.

If f = {(1, 1), (2, 4), (3, 9)}, then f(5)=25

the answer is false (online system) but i dont know why

pls help stuck on HW

About 60% of the normal humanbeing's body weight is composed ofwater. how much of a 125 poundperson is water weight? f 72 pounds h 76 poundsg 75 pounds i 80 pounds

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Select the number of ways in which a line and a circle can intersect