Help only one question please with full step amd if you are right i will mark you as brainlist​

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

What is the base of 1/9 to the power of 2

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