I don’t understand graphs at all help

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.