Can someone help me please?

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

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane