Each student in mr. farmers class took 42 tests this school year. mr. farmer has 8 students in his class. which pair of expressions shows two ways to determine the total number of tests mr. farmer graded this year? a) 40 × 2 and 40 × 8 b) 42 × 8 and 40 × 8 c) (42 × 8) + (2 × 8) and 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 d) (40 × 8) + (2 × 8) and 42 + 42 + 42 + 42 + 42 + 42 + 42 + 42

The answer is D.I hope I got it right.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

answer: 4 meters

step-by-step explanation: to you understand 2/3 better you can do 1 divided by 3 = . then multiply that by the 2 which is .66666666666666667 then you would do 6 x .66666666666666667 which is 4.      

hope this .