Bahira is determining what happens to the quadratic equation y 15% + 8x + 3 If the 1 is changed to -1. Which of the following best describes the effect?
A) changes the quadratic to concave down
B) changes the quadratic to concave up
C) moves the y-intercept up 2 units
D) moves the y-intercept down 2 units

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

hey there : ) your answer would be a.

step-by-step explanation: