Factor the expression 15 x - 10 x y

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Solve -.016x= -16. need solving this