One day at 3:00 a. m., the temperature was - 13°F in Kodiak, Alaska. At 10:00 a. m., the temperature was 22°F. What was the average change in temperature per hour?

Pure acid is to be added to a 10% acid solution to obtain 72 L of a 20% acid solution. What amounts of each should be used? _L of pure acid solution and _L of 10% acid solution

What is 4618 increased by 81.9%?

Find the value of the fourth term in this sequence. 77, 74, 71, ___, 65 (not multiple choice)

2x (5x squared + 4x - 3)

Divide the product of 4 and 5 by the sum of 2 and 8

Expand the number 425 into its corresponding exponential form.

What are the coordinates of the centroid of a triangle with vertices P (-4, - 1), Q (2, 2), and R (2, - 3) ? Enter your answers in the boxes. (,)

Is 700% of 5 less than 10, greater than 10 less than 100, or greater than 100

A polyhedron has 6 vertices and 9 edges. How many faces does it have? 3 5 7 9

Find the quotient. 42j^4k^2 / (-3j^3k)