Starting from 150 ft away, your friend skates toward you and then passes you. She skates at a constant speed of 20 ft/s. Her distance d from you in feet after t seconds is given by d = l150-20tl. At what times is she 50 ft from you?

Question

Starting from 150 ft​ away, your friend skates toward you and then passes you. She skates at a constant speed of 20 ​ft/s. Her distance d from you in feet after t seconds is given by d = l150-20tl. At what times is she 50 ft from​ you?

Bot GPT 3.5 · Answer

To find the times when your friend is 50 ft from you, we can set the distance function d = 50 and solve for t. Given: d = 150 - 20t Setting d = 50, we have: 50 = 150 - 20t Rearranging the equation: 20t = 150 - 50 20t = 100 Dividing by 20: t = 100/20 t = 5 Therefore, your friend is 50 ft from you at t = 5 seconds.

Starting from 150 ft​ away, your friend skates toward you and then passes you. She skates at a constant speed of 20 ​ft/s. Her distance d from you in feet after t seconds is given by d = l150-20tl. At what times is she 50 ft from​ you?

To find the times when your friend is 50 ft from you, we can set the distance function d = 50 and solve for t.

Starting from 150 ft away, your friend skates toward you and then passes you. She skates at a constant speed of 20 ft/s. Her distance d from you in feet after t seconds is given by d = l150-20tl. At what times is she 50 ft from you?