Identify the exponential function graphed below which of the following is the equation for this graph?
2 answers:
Answer: The answer is (D)
Step-by-step explanation: We are given the graph of an exponential function and we are to select the correct exponential function from the given options.
The attached figure shows the graph of the four exponential functions, where the black graph shows equation (A), red graph shows equation (B), blue graph shows equation (C) and green graph shows equation (D).
We can see the given graph matched with the green graph in the attached figure. In both the graphs, f(0) = 2, which is not satisfied by any other option.
Thus, (D) is the correct option.
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If the height of candle after 10 and 26 hours are 25 cm and 17 cm then the height of candle after 21 hours is 19.5 cm.
Given height of candle after 10 hours is 25 cm , height of candle after 26 hours is 17 cm.
We have to find the height of candle after 21 hours.
We have been given two points of linear function (10,25),(26,17).
We have to first form an equation which shows the height of candle after x hours.
let the hours be x and the height be y.
Equation from two points will be as under:
(y-25)=(17-25)/(26-10)* (x-10)
y-25=-8/16 *(x-10)
16(y-25)=-8(x-10)
16y-400=-8x+80
8x+16y=480
Now we have to put x=21 to find the height of candle after 21 years.
8*21+16y=480
168+16y=480
16y=480-168
16y=312
y=312/16
y=19.5
Hence the height of candle after 21 hours is 19.5 cm.
Learn more about equation at brainly.com/question/2972832
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Check the picture below.
is simply a 9x9 square, so its perimeter is simply 4*9.
