Answer: 27.44 % decrease in gas prices
Step-by-step explanation: First subtract 2.15 by 1.56 to get 0.59
then divide it by the starting value which is 2.15
0.59 divided by 2.15 is approximately 0.2744
then multiply times 100 to get 27.44 %
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Answer:
8. 
and 1
9. 
and -5
Step-by-step explanation:
Hope this helps ;)
Area=1/2 times base times height
base=4
height=3
area=1/2 times 4 times 3
area=2 times 3
area=6 square units
Dana can type 90 words per minute.
Since, 1 minute = 
hours
Therefore, number of words she can type = 
= 90×60
= 5400 words per hour
If she types 
words in 'x' hours.
Number of words Dana types with the given speed in 'x' hours = Speed of typing × Time
= 
Therefore, 
hours
Therefore, Dana types words in 48.15 hours.
Learn more,
brainly.com/question/621754
7.71 feet is your answer.
