Mary's graduation picnic costs $50 for the decorations, plus an additional $2 for each attendee. Which equation could represent the total cost of the graduation picnic

If a =6, what is the value of 2a(3b + 5c)?

What is the size of the matrix resulting from

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!