Help asap pleaseee

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 parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?