What is the product?
(x + 3)(2x – 1)

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

The table above shows approximate conversions from gallons to liters. what is the value of x?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?