Anumber k is less than 3 units from 10.
what's the absolute value

It would be: k+3 = 10

subtracting 3 from both sides,

k+3-3 = 10-3

k=7

abs(k-10)<3

Step-by-step explanation:

abs(k-target number)<tolerance

target #:10

tolerance:3

abs(k-10)<3

as a compound inequality: 7<k<13

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.