NEED HELP ASAP!

Write an expression to represent this expression:

A number minus 7

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

True or false? a circle could be circumscribed about the quadrilateral below.