Alana and Petra go to a used book sale, where every book is the same price. Alana buys books and Petra buys books. They run into their friend Angus, who really loves to read, and discover that he has bought books. Angus received a discount, but he still spent more than Alana and Petra combined. How much does one book cost?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Which graph represents the given linear function 4x+2y=3

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?