Acounty govt says that a safe level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.
a. write and solve an absolute value inequality to represent this situation.
b. a lifeguard measures the chlorine level in the pool and finds it is 1.0 ppm . should he add more chlorine?

What is the value of the expression below? 148+(-6)| + |– 35= 7|

Use the distributive property -7(-2x+u-2)

The lengths of two sides of a triangle are 9 and 15. what can be said about the length of the third side? a. it must be greater than or equal to 6 and less than 24. b. it must be greater than or equal to 6 and at most 24. c. it must be greater than 6 and less than 24. d. it must be greater than 6 and at most 24.