Y=3(2x 5)-7 is it none linear or linear

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?

Find the value of x that will make l ll m

In what organelle does photosynthesis take place?