Please help Which of the following are functions from the set { 1, 2, 3} to the set {a, b, c, d}? If the set of ordered pairs is not a function, explain why not.
a.{( 1,a) , (2, b) , (3, c) , (1, d) }
b.{( 1,a) , (2, b) , (3, a)}
c.{( 1,a) , (2, a) , (3, a)}
d.{( 1,a) , (2, b) , (3, b)}

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Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

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