How can i find the slope and y-intercept ? do i have to use some specific calculator?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

What is 140% of 25? because i need

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv