Answer:
B. Stratified random sample is the correct answer
4b - 7 + 2b + 11 and b + 3 + b + 1 are congruent.
You add the common factors in each problem: 2b + 4 = 2b + 4
Answer:
50%
Step-by-step explanation:
Answer: D
Step-by-step explanation:
Just do 7 x 88 LOL