James needs to fill in three blanks with letters. Find the number of ways he can fill them in if: a. the letters can be repeated
b. the letters cannot be repeated

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u