4. (04.05)
which of the following is a polynomial with roots 4, -5, and 7? (2 points)
o
o
o
o
f(x) = x3 – 6x2 – 27x + 140
f(x) = x3 – 6x2 – 20x + 27
f(x) = x3 – 20x2 – 27x + 35
f(x) = x3 – 20x2 – 35x + 140

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?