please help i need this answered as soon as possible!!! -Use ΔDEF, shown below, to answer the question that follows:

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

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-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.