Me ive been stuck on this 6 cupcakes have a total of 1200 calories. how many calories does one cupcake have?

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°