The correct option will be the last one: 
<em><u>Explanation</u></em>
The general equation for sinusoidal function is: 
, where 
Amplitude, 
frequency and 
y-intercept
Here the maximum value is 15 and the minimum value is -3. So, the distance between maximum and minimum values is 18. That means, the Amplitude, 
Frequency 
is given as 3 and y-intercept
is 6
So, the required function will be:
Answer:
2,520 - 140x
Step-by-step explanation:
It's 140 feet per minute, so if you need to find it's height after x minutes you just plug in your value for x.
Please mark brainliest if possible and have a nice day!
Answer:
Step-by-step explanation:
(x^a)^b=(x)^{a×b}
Answer: 3/4
Step-by-step explanation:
If Jamal has 3 times as many cars as planes then we could represent it by the equation x + 3x = 20 where x is the number of planes and 3x is the number of cars.
x+ 3x =20 solve for x
4x = 20
x = 5
Number of planes = 5
Number of cars = 3(5) = 15
Now the ratio of his cars to the total model will be 
which reduces to 3/4.
