Ineed on my home work, hope this works

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

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

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers