Answer:
D
Step-by-step explanation:
3 1/2 = 1 yard and 1/2 inch then a yard then 31 divided by 12 is 2.??
231
=
42÷2= 21
9×21= 189
189 students total
42 6th graders
1. decreases
2. 31.50
It decreases because there's a negative sign.
It's 31.50 because 10.50 * 3 = 31.50