Help me and show examples plzzz

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

The table respent two linear functions the equation respented by the first tables is given

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?