Can someone answer this correctly

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

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54