You are standing outside during the daytime. How can you see a blade of grass? A. Light is produced by your eyes and travels out to the grass.
B. Light is produced by the grass and travels straight to your eyes.
C. Light travels from the Sun to the grass and is then reflected to your eyes.
D. Light travels from the Sun to the grass and then bounces off the sky to your eyes.

C: Light travels from the Sun to the grass and is then reflected to your eyes.

Explanation:

Our eyes don't produce light but detect light (so answer A is not correct)

The grass doesn't produce light unless it is burning (discard answer B)

Answer C is the correct one.

The light we detect from the grass is not light bounced off the sky, it comes directly from the grass to your eyes (you are not looking at the sky when you see the grass) Discard answer D

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)