What is the correct equation to solve this word problem? A $15.60+$0.60x=$3.00

B $0.60+$3.00x=$15.60

C $3.00+$0.60x=$15.60

D $15.60+$3.00x=$0.60

Can someone check my answer? you : )

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?