The sample space is all of the possible combinations using the stuff given. For example, you can make a ham and rye sandwich, a ham and sourdough sandwich, and a ham and white sandwich, and so on.
Answer:

Step-by-step explanation:
12+18=30 so together they have $30.00 in all.
Answer:
Seven subtracted by a number
Step-by-step explanation:
A verbal expression is a mathematical statement that is expressed in words.