If you understand what is linear pair, you can see the same in triangle also. A linear pair is a pair of adjacent, supplementary angles. Adjacentmeans next to each other, and supplementary means that the measures of the two angles add up to equal 180 degrees.
2.5 would be how many tablespoons of cleaner you would add to 4 quarts of water.
I’m pretty sure c is supposed to be 37.4 instead of 27.4
23 x 8 is equal to 184. 23+23+23+23+23+23+23+23. 184 ÷ 8 = 123
