There are 7 classes. There are 5 groups in each class. Each group has 4 boys. Which equation shows B, the total number of boys? A. 7 + 5 + 4 = B
B. 7 x 5 x 4 = B
C. (7 x 5) + 4 = B
D. 7 + (5 x 4) = B

D

Step-by-step explanation: This is because when solving this 2 step problem, The overall topic goes out the parentheses. So, You can automatically take out " C ". Also, when you do 2 step problems there is always going to be 2 operations. So, you wouldn't even have to do the math. It's common sense the only one showing 2 operations and have the " 7 " out is " D " So you may eliminate all the other answer choices. :

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

y > 1/3x

y < = -x + 4

hope this : )