What is 12.4 but the .-4 has a line above it

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Sum is 17 and their difference is 3