Sagot :
so solve for x
|x-72.5|=4
the || makes the inside positive so it could be positivie and negative so
x-72.5=4 and x-72.5=-4
solve for x in both situations
x-72.5=4
add 72.5 to both sides
x=76.5
x-72.5=-4
add 72.5 to both sides
x=68.6
the minimum it can be set to is 68.5 and the max is 76.5
|x-72.5|=4
the || makes the inside positive so it could be positivie and negative so
x-72.5=4 and x-72.5=-4
solve for x in both situations
x-72.5=4
add 72.5 to both sides
x=76.5
x-72.5=-4
add 72.5 to both sides
x=68.6
the minimum it can be set to is 68.5 and the max is 76.5