The temperature at 9 A. M. was 42°F. The next four hours the temperature dropped 2 degrees per hour. What was the temperature at 1 P. M.?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?