Emily has taken 4 tests so for in her English class. Her scores so for are 84, 73, 91 and 65. She has one more test left and she really wants to get a B average for her overall test grade. What score would she need to get on the next test in order to get an 80 overall average?

Antoine’s quiz grades are of 82, 91, and 88. He gets an 89 on his final exam. His teacher hasn’t graded the other exams yet, but for this course the weight for his quiz average is 15% of his final grade and the final exam counts for 55% of the final grade. What is his grade in the class with just the quizzes and the final?   Antoine’s quiz grades are of 82, 91, and 88. He gets an 89 on his final exam. His teacher hasn’t graded the other exams yet, but for this course the weight for his quiz average is 15% of his final grade and the final exam counts for 55% of the final grade. What is his grade in the class with just the quizzes and the final?   88.6% 88.2% 88.9% 87.5% 87.9%

A student in an Chemistry class has test scores of 70, 63, 61, and 68. The final exam is worth the same amount as 3 test grades.    How would you find the lowest grade that could be earned on the final exam that would still result in at least a B in the course (average score of 80%?)

Karla picks up her friend who lives in another city and they head north on a road trip. Karla looks at a map and sees that after 5 hours of driving, they are passing mileage marker 352 on Highway 277. After driving for 12 hours, they pass mileage marker 842. What is Karla's average rate during the road trip? miles per hour