Answer: Sandra made it to the next level.
Step-by-step explanation:
Given: To advance to the next level, points required = at least 10.
She has scored:
Points for correct matches = 18
Points for incorrect matches = -6
Combined points = Points for correct matches + Points for incorrect matches
= 18 + (-6)
= 18-6 = 12 > 10 [(+)(-) =(-)]
i.e. Sandra made it to next level.
Hence, Sandra made it to the next level.
