Can someone please help

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6