Answer:
x=any real number
Step-by-step explanation:
5 ( 1 + X) = 5x + 5
5x+5=5x+5
true statement
You can do the normal 12 - 3 = 9
Or 12 + (-3) = 9
You can evaluate the functions separately, then add results:
.. f(3) = 2*3 +21 = 27
.. g(3) = 3 -24 = -21
(f +g)(3) = f(3) +g(3) = 27 -21 = 6
Or, you can find the combined function and evaluate that for x=3.
.. (f +g)(x) = f(x) +g(x)
.. = (2x +21) +(x -24)
.. = 3x -3
The
.. (f +g)(3) = 3*3 -3 = 6
Either way, the best choice is C) 6.
In 1 hour, Hannah will play 6 2/5 songs, or 32/5.
To get from 5/8 to 1, you have to multiply by the number 1 3/5 (5/8 • 1 3/5 = 1). So, you multiply 4 by 1 3/5 too. (4 • 1 3/5) This gets you to the final answer, 6 2/5.