f(x) = 4x + 3
That's one-to-one, a linear function that will give a different f(x) for each different x.
For the inverse let's swap x and y and solve for y
x = 4y + 3
x - 3 = 4y
y = (x- 3)/4
That's the inverse,
Answer: (x- 3)/4, second choice
The domain and range of the inverse is all real numbers. It's two lines; I'll leave the graphing to you.
A.T.Q, equations will be:
x+y = 450
2x+5y= 1800
Substitute value of x from equation (1), in equation (2)
2(450-y) +5y=1800
900-2y+5y=1800
3y=900
y=300
so, your answer is 300
Let
Then
and solving for x gives
By the quadratic formula,
but x must be a positive number, so only the positive square root solution is valid.
We identify a = c = 3 and b = 2, so a + b + c = 8.
Answer:
-0.2,-2.2,-0.2, 0.8, 1.8
Step-by-step explanation:
Given :Five people were asked approximately how many hours of TV they watched per week.
Their responses were as follows. 6 4 6 7 8
To Find : Find the deviations from the mean for these five data values
Solution :
Mean = 
Mean = 
Mean = 
The deviations from the mean for these five data values: 6-6.2,4-6.2,6-6.2,7-6.2,8-6.2=-0.2,-2.2,-0.2, 0.8, 1.8
Hence the deviations from the mean for these five data values is -0.2,-2.2,-0.2, 0.8, 1.8
1. <u>Plug in</u> " -2 " into f
f(-2) = 3 (-2) - 1
f(-2) = -6 - 1
f(-2) = -7
2. <u>Plug in</u> "5" into g
g(5) = -(5) + 6
g(5) = -5 + 6 = 1
3. <u>Add</u> what you got when you solved for <u>f(-2) and g(5) together</u>
f(-2) + g(5) = ?
f(-2) + g(5) = -7 + 1
f(-2) + g(5) = -6
Your answer is A
Don't forget to vote brainliest! I hope I helped! :)
