Samantha earned 6 dollars per hour if she earned $150 for working 25 hours.
Equation: 150= 25x
25x=150
X=6
Answer:
a) 1:3
b) 9:225,000
Step-by-step explanation:
A)
1 hour is equal to 60 minutes. Written as a fraction it would look like
which would be equal to
, or 
B)
Just multiply both sides of the ratio by 9, you will get 
Hope I helped, please mark as brainliest! Have a good day!
Answer:
This experiment has three factors (shampoo type, gender, whether hair is dyed)
Step-by-step explanation:
the researcher is trying to make a comparison between an old shampoo and a new on and also was gender sensitive as she considers their hair coloration too because it affects the result slightly.