Which equation means seven times a number is equal to 21?

a. 21 7 = n

b. 7 * 21 = n

c. 7 n = 21

d. 7 * n = 21

What is the sum of the first 20 terms in the arithmetic series? -6 + (-2) + 2+6 + ... 624 640 654 680

A stray dog ate 10 of your muffins. That was of all of them! How many are left?

Which of the following expressions is equal to 1? a. 5^0 x 6^-3 x 6^3 x 5^1 b. 5^2 x 6^-2 x 6^3 x 5^-3 c. 5^2 x 5^-2 x 6^0 x 6^2 d. 5^-1 x 6^5 x 6^-5 x 5

3. Jada is making a scale model of the solar system. The distance from Earth to the moon is about 2.389 x 10 miles. The distance from Earth to the sun is about 9.296 X 10' miles.

In the parabola y = (x+1) ^2+2

A 16-mb flash drive was sold on sale for $18.50. If this sales price was 81% of the original price, what was the original price?

6,4,7,2 what is the average of 5

Boxes of fruit snacks are on sale at the grocery. The boxes are the same size. A family needs to purchase 24 boxes. There are 3 boxes for 5 dollars and 4 boxes for 6 dollars.

Last year, a construction worker had a gross income of 29,700 of which he contributed 7% to his 401 (k) plan. If he got paid monthly, how much was deducted from each paycheck for his 401 (k) plan?

Find the circumference of both circles. Use 3.14 for a 6 in. 9 in.