Ten times a number, x, is one-half the sum of the number and three. Which answer represents this situation?

10x=12(x+3)

10x+12x+3

10x=12x+3

10x+12(x+3)

Select the quadratic that has root x = 8 and x = -5

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.