Practice Exam #1 Correctly Answered 2024/2025

Convert 250 centimeters to kilometers {Ans: .0025 - (1 kilometer is equal to 100,000 centimeters. 250/10000 = .0025)}Enrique weighs 5 pounds more than twice Brendan's weight. If their total weight is 225 pounds, how much does Enrique weigh? {Ans: 152 lbs - (If E + B = 225, and E = 2B + 5, then 225 - B = 2B + 5. Solving for B, 3B = 220 and B = 73.3. 225 - 73.3 = 151.7)}Loral received all her grades for the semester (in parentheses) along with the weight for each grade, shown below. What is her final grade? Weight 45% = 3 tests (80%, 75%, 92%) 25% = final (88%) 15% = paper (91%) 15% = 2 oral quizzes each worth 25 points (22, 19) {Ans: 85 - (Calculate the weighted average of the 3 tests: ((80+75+92))/3 = 82.3; Calculate the average of the 2 oral quizzes: (22/25) ×100 = 88 and (19/25) × 100 = 76, so (88 + 76)/2 = 82. Multiply each grade by their weight, and then add them all up to determine the final grade: (82 × .45) + (88 × .25) + (91 × .15) + (82 × .15)