What is 8c² + 66c + 16 in polynomial standard form ?

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.