ANSWER
An exponential growth function.
EXPLANATION
The given function is

This function is of the form,

Since k is positive , the function will grow exponentially and fall asymptote to the negative x-axis.
As x-values becomes bigger and bigger positively, the graph grows exponentially.
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5 : 20
Divide both sides by 5 to get the answer
5/5 = 1
20/5 = 4
Thus, the answer is 1 : 4
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Option A
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Sorry if i am wrong
Answer:
19.64°
Step-by-step explanation:
The angle of elevation can be calculated as follows
Tan ©= 15/42
= 0.357
= tan-1 0.357
= 19.64°
Hence the angle of elevation is 19.64°