Answer:
B. stratified.
Step-by-step explanation:
If a population is composed by identifiable groups or strata, with large variations between groups, the stratified sampling should be applied in order to comprehend and represent all of the different groups in the sampling process.
Therefore, the answer is alternative B. stratified.
Answer: Percentage of sales tax will be 5%.
Step-by-step explanation:
Since we have given that
Original amount of a surfboard = $240
Sales tax on a surfboard = $12
So, Percentage of sales tax will be

Hence, Percentage of sales tax will be 5%.
x+7.9=8.5
solving x would be .6
if my answer helps please mark as brainliest.
Answer:
1st one is 2. 2nd one is 5. 3rd one is less than. 4th one is, is smaller
Step-by-step explanation:
Would use commutative property
ab = a*b = b*a = ba
equivalent expression = ba