Find the sum of 3 six times a number y and two times the same number y

How many diagonals are in a 30-gon?

A positive integer is subtracted from it's square. The units digit of the result could be which of the following

If - 7 (u-3) = -14 what is the value of y

Simplify 8-11 And 4-5

Do circumstance of a circle with 17ft

How does the volume of a sphere with radius 2cm compare to the volume of a sphere with radius 1cm

6 yards to 36 yards. Find the percent of change. Round to the nearest tenth of a percent if necessary.

Mark, evan, and cayla are playing a game. there are 3 blue marbles, 2 red, and 1 green marble. if mark pulls a blue marble he gets $1. if evan pulls a red marble, he gets a $2. if cayla pulls a green marble, she gets $3.

How do you reduce 12/30 by 1/2

Maria's age of 17 years less than Orlando's age. The sum of their ages is 33 find their ages.