Bobby has 3 times as many model spaceships as his friend Sylvester does. Bobby has 21 spaceships. How many model spaceships does Sylvester have?

The surface area of a cube is the product of 6 and the square side of the side length

What are the zeros of the quadratic function y=x^2-100

The elevation at the top of Mount Everest is 8850 meters. The temperature falls at a rate of 1 degree C per 100 meters. The base of Mount Everest is at an elevation of 5400 meters and it's temperature is (-3) degrees C.

Integer Operation: Adding Integers 1) 85 + (-96) =

Sam wants to buy 8 pencils and 6 pens, which cost a total of $8.50. He realizes he doesn't have enough cash and instead takes only 4 of each, which costs only $5. What is the price of each pen and pencil?

Sean is taking drivers ed. And the instructor asked him to stay within 2 miles of the posted speed limits. The current speed limit is 45 mph. Write an inequality that shows the acceptable speeds that Sean may drive

Michaela wrote the following. If p + 9 = 25 and p = q, then q + 9 = 25. Which property did Michaela show? A) symmetric property of equality B) multiplication property of equality C) substitution property of equality D) reflexive property of equality

A music store orders wooden drumsticks that weigh 96 grams per pair. The total weight of the box of drumsticks is 782 grams. How many pairs of drumsticks are in the box if the empty box weighs 206 grams? Enter your answer.

8-0.3k=8 (Simplify your answer)

A regular convex polygon has 14 sides. What is the sum of the measures of the interior angles?