North Carolina School of Science and Mathematics is releasing a new edition of its popular precalculus textbook, Contemporary Precalculus through Applications, Third Edition in partnership with UNC Press, and making it available electronically to North Carolina high schools and colleges free of charge. Used copies of the previous edition of the NCSSM textbook, published by an imprint of textbook giant McGraw-Hill, currently sell for $97+ from online booksellers. For the new third edition, in addition to being free electronically, print copies are also available at a more accessible price point of $38 for schools which...