He function f(d) = –3d + 60 gives the remaining life of a flashlight battery, in hours, d days after the start of a hike. what is the meaning of the y-intercept? the battery will run out of life 20 days after the start of the hike. the battery will run out of life 60 days after the start of the hike. at the start of the hike, the flashlight had 20 hours of battery life. at the start of the hike, the flashlight had 60 hours of battery life.

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Step-by-step explanation:

It is given that a number, x, rounded to 2 significant figures is 1300.

It is possible if,

1. The value of x is greater than of equal to 1250 and less than or equal to 1300.

i.e.,     ...(1)

2. The value of x is greater than of equal to 1300 and less than 1350.

i.e.,       ...(2)

On combining (1) and (2), we get

1350 is not included in the error interval for x.​

Interval notation is .

Therefore, the error interval for x is .