Christian randomly selects students from his grade to rate a math test as easy, moderate, or difficult. of the students he surveyed, 13 said the test was easy, 11 rated it as moderate, and 3 found it difficult. assuming that all students took the same test, how many of the 162 total students in christian’s grade would probably rate the test something other than easy?

3x + 4y = 5 x- 3y = -7 solve by substitution

2. there are 250 students in a school auditorium. use numbers from the box to complete the table. 16, 38, 18, 45, 25, 50, 32, 60 grade number percent of all students of students fifth 24 sixth 95 seventh 20 eight 45

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.