The equation of line h is y = 3x – 4.5. Line k is parallel to line h and contains the points (-2, -3) and (a, 15). What is the value of a? I NEED HELP WITH THIS QUICK

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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?