The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours.
2x+7=x+3
2x+7=3
-×
x+7=3
-7 -7
x=-4
Let the total number of people surveyed by y.
we can solve this by using algebra.
to find the percentage of a number in terms of decimals or integers, just multiply the total by the percentage,
so with this question,
y x 40% = 20
shift x40% to the other side and turn it into /40%
y = 20 / 40%
change the percentage into decimals for easier calculations,
y = 20 / 0.4
y = 50
therefore, the answer to this is 50 people.
the answer is not there. first you take 950.00 and back out (subtract) the 40 dollar fee for a ladder rental which leaves 910.00 then divide the 910 by 35/hr and you get 26 hrs.
Answer:
-27
Step-by-step explanation:
substitute x for 5
multiply -5 and 5
subtract 2 from -25
