Answer:
7.62
Step-by-step explanation:
use the Pythagorean theorem
3^2+7^2=58
the square root of 58 is about 7.62
Answer:
(3, 10)
Step-by-step explanation:
f(3) means substitute the value of x = 3 into f(x)

Therefore, when x = 3, y = 10
So the ordered pair is (3, 10)
I have a feeling that the answer 170 in.
Answer:

The value of r is 0.451
The percentage decrease is about 45.1%
Step-by-step explanation:
The given exponential function is 
Using the exponent rule, 

Now the value of 
Thus, we can rewrite the function as

Therefore, the function in form 

The value of r is 0.451
The percentage decrease is about 0.451 ×100 = 45.1%
Answer:
20
Step-by-step explanation: multiply