There are many penguins on a hill. 53 penguins waddled off the hill. Now 21 penguins remain on the hill. How many penguins were on the hill to start?

74 penguins

72 penguins

32 penguins

34 penguins

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.