Express each statement using an inequality involving absolute value.Do not solve.

Question

1.The majority of grades in Sean's English class are within 4 points of 85.

2.AA thermometer is guaranteed to give a temperature no more than 1.2F from the actual temperature. If the thermometer reads 28F, what is the range for the actual temperature?

How would I solve these questions? Thanks

Answer 1

| g-85 | </= 4

do the temp one the same way

Answer 2

Could you explain more on why you put
| g-85 | </= 4 ? Thanks

Answer 3

In problems like this always say "what if"

If a grade were 87
|87-85| = |2| = 2 within 4 of 85
if it were 83
|83 -85| = |-2| = 2 within 4 of 85
but
if it were 80
|80-85| = |-5| = 5 not within 4

Answer 4

Would the second one be |28 - t|</= 1.2?