Mackenzie earned a score of 79 on her semester biology test. she needs to have a total of at
least 160 points from her semester and final tests to receive a b for her grade. what score must
mackenzie earn on her final test to ensure her b?

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

Graph y = -|x| + 2. click on the graph until the correct one appears.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.