D i think because stimuli is a responce right ?
Answer:
I believe the answer is, A.
Explanation:
Ordered pairs are classified as a function when none of the x’s in the ordered pairs match.
Like in b, a pair has 3.
And in c, two pairs have 1 and 3.
Step-by-step explanation:

Answer:
No solution.
Step-by-step explanation:
That image is of the symbol of the empty set. The solution set is empty, which means there is no solution.

The pizza pirate ate the whole pizza!
2(days) + 3(a few days) = 5
20 x 5 = 100%
Therefore, the whole pizza is gone. Don't worry, I'll buy a new one!