During the landing of the mars science laboratory curiosity, it was reported that the signal from the rover would take 14 minutes to reach earth. radio signals travel at the speed of light, about 186,000 miles per second. how far was mars from earth when curiosity landed?

156,240,000 miles.

Step-by-step explanation:

Given: The speed of light =186,000 miles per second.

Time taken by signal to reach earth = 14 minutes.

In seconds, Time taken by signal to reach earth = seconds.

Let d be the distance from Mars to Earth.

We know that

Hence, the distance from Mars to Earth is 156,240,000 miles.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer