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does the table below represent a function?

yes or no plz explain

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons