Certain means the event will happen.
Impossible means the event would never happen.
Part A
Distribute the one-half.
1.24g + 0.87m + 0.98z
Part B
(29.68 - x) + 14.45
Or simplified to 44.13 - x
Part C
a = number of times at the store
b = gloves' price
c = hat's price
Answer:

Step-by-step explanation:

The domain are the set of all possible values for x.
There are no restrictions on the value of x.
The domain is all real numbers.
Factor all 3 numbers
14 = 2 * 7
15 = 3 * 5
21 = 3 * 7
There are no common factors in all 3 numbers
Answer No GCF.
Though i guess you could say 1 is the GCF.