Help whoever gets answer right gets brainliest and 20 pts

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Solve for n. round to the tenths place, if necessary. 14.2 cups of flour6 loaves of bread= 20 cups of flour n

Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial