X represents the number of minutes.
y represents the price of the bill.

Plan A
y = 25.75+0.75x

Plan B
y= 20.99+x

Plan A is better when it is more than 19 minutes.
Plan B is better when it is less than 19 minutes.

6 0

3 years ago

Sarina throws a ball up into the air, and it falls on the ground nearby. The ball's height, in feet, is modeled by the function

tangare [24]

Answer:

Step-by-step explanation:

We have a function of f(x) here. When Sarina throws the ball, it has been 0 seconds since she threw it.

Since x represents the amount of seconds, we can find the height of the ball (f(x)) by substituting x in as 0.

$-0^2 - 0 + 3$

0 squared is 0, 0 minus zero is 0, and 0+3 = 3, so

$f(x) = 3$

Meaning that when Sarina threw the ball, it's height was 3 feet.

Hope this helped!

7 0

3 years ago