If we set the amount of hours she needs to babysit as x, his word problem can be shown as:
3+ 7.50x = 25.50
Now we can just solve for x
25.50-3= 22.50
22.50/7.50 = 3
Therefore she has to babysit 3 hours
Answer: our function is:
f(x) = A*sin(2*pi*270s*x)
Step-by-step explanation:
We have that the frequency of a given engine is 270 hz, it starts at 0, so we may represent this with a sin function (because sin(0) = 0)
Then we could use the function
f(x) = A*sin(c*x)
A is the maximum intensity of the hum, and c depends on te frequency, we know that the period of a sin function is 2pi, then:
f = 270/s
T = 1/270s
c*1/270s = 2pi
c = 2*pi*270s
Then our function is:
f(x) = A*sin(2*pi*270s*x)
Answer:
f(x) = 417(3.15) x the second option which is the only one with correct units from the question
The answer is A your welcome :)!!!
