She makes 3 hats per 1 and 1/2 hours. Therefore she makes

hats per hour. This fraction simplified is 2 hats per hour. This is the solution.
2 hats per hour.
Hotel a cause 40 x 4 = 160 which is under 175
Answer: CIRCLE C
Step-by-step explanation:
Answer: If you mean the math definiton then a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.