Choose the correct simplification of the following:
(2x^2 + x - 1) - (x^2 + 3x – 5)

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?

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