How many 4 in. square tiles will it take to cover a room that measures 18 feet by 15 feet?
2 answers:
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Answer:
<em>The correct answer choice is: B</em>
Step-by-step explanation:
<u>Culture A</u>
Initial number of cells = 1000
The number of cells is raised by 200 each day and every day thereafter.
So, the number of cells raised in one month(30 days)
Thus, the total number of cells in culture A at the end of one month will be:
<u>Culture B</u>
Initial number of cells = 1000
The number of cells is increased by 8% each day and every day thereafter.
<em>Formula for exponential growth is:</em> , where
Initial amount,
Final amount,
Rate of growth in decimal form and
Time duration.
Using the above formula, the number of cells after 30 days will be.....
That means, Culture B is more effective in promoting cell growth.
Answer:
Ok:
Step-by-step explanation:
So f°g . means f(g(x)). (The ° should be more center and bigger but I don't know to do that on a keyboard). f(g(x)) means that you replace the x in f(x) with the g(x) function. i.e:
if f(x) = 2x+2
and g(x) =
f(g(x)) = .
Similarly, in this case, we get f(x) = 2x-3 and g(x) = 3x-2.
Then, f(g(x)) or f°g(x) is 2(3x-2) - 3.
And we plug in -2 to solve:
2(3(-2)-2)-3.
and get -19.
Check if I am wrong because everyone makes mistakes but that is the way to solve this.