KBH3298
21.05.2021 •
Mathematics
Which function has the greater value when x = 7?
Option 1: f(x) = 10 • 2x
Option 2: f(x) = 200 • x2
a
Option 1
b
Option 2
c
They are the same
Solved
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Ответ:
From there we will have x+2x, which is 3x. So now we have 3x+11 = 5.
Subtract 11 from both sides, leaving us with 3x = -6.
From there we need to divide both sides by 3. Leaving us with x = -2.
Now that we know your number (-2), we can find Alex's number.
So from the word problem, we know that Alex's number is 11 more than twice your number. (2*-2+11) = 5.
So we have 2 times -2, which is -4. -4 plus 11 is 7.
To check our answer we need to add both of these two numbers together and see if they equal 5.
So 7-2 (or -2+7) will be 5. Confirming Alex's number to be 7.