名师归纳总结 精品学习资料 - - - - - - - - - - - - - - - Problem 1 The ratio is closest to which of the followution Problem 10 What is the sum of all of the roots of . Solution Problem 11 Jamal wants to save 30 files onto disks, each with MB space. 3 of the files take up MB each, 12 of the files take up MB each, and the rest take up MB each. It is not possible to split a file onto 2 different disks. What is the smallest number of disks needed to store all 30 files. Solution Problem 12 Mr. Earl E. Bird leaves home every day at 8:00 AM to go to work. If he drives at an average speed of 40 miles per hour, he will be late by 3 minutes. If he drives at an average speed of 60 miles per hour, he will be early by 3 minutes. How many miles per hour does Mr. Bird need to drive to get to work exactly on time. Solution Problem 13 Given a triangle with side lengths 15, 20, and 25, find the triangle's smallest height. Solution 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 3 页,共 6 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - - Problem 14 Both roots of the quadratic equation number of possible values of is Solution Problem 15 are prime numbers. The Using the digits 1, 2, 3, 4, 5, 6, 7, and 9, form 4 two-digit prime numbers, using each digit only once. What is
