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stira [4]
3 years ago
12

Let f(x)=-5x-4 and g(x)=6x-7. find f(x) + g(x)

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
6 0

Answer:Unit 2 Lesson 6 Function Operations


1. D x - 11

2. B -3x + 9  Don't get confused with the - 7, since you are subtracting 3x + 2 - 6x - 7, the - 7 switches to + 7.  

3. C -30x^2 + 28x - 6; all real numbers

4. D x - 4; all real numbers except x /= -4

5. C It doesn't matter which discount is applied first, the result will be the same.  


100% correct, cheers!

Step-by-step explanation:


DIA [1.3K]3 years ago
3 0
F(x) = -5x - 4

g(x) = 6x - 7

f(x) + g(x) = (-5x-4) + (6x-7)

f(x) + g(x) = x - 11
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Answer:

a)

d)

Step-by-step explanation:

It's easiest to reduce each statement to its simplest form for comparison

Our test statement can be reduced by combining like terms

16x - 12 -24x + 4 = -8x - 8

this becomes our new gold standard

a) 4 + 16x - 12(1 + 2x)

apply the distributive property by multiplying terms in parenthesis by -12

4 + 16x - 12 - 24x

combine terms

-8x - 8     Yeaah, We have a winner as it exactly matches our gold standard.

b) 40x - 16 is already in simplest terms and does NOT match the gold standard.

c) 16x - 24x - 4 + 12

has the same cardinal values as the original, but differing signs, reducing gives -8x + 8

Not quite the same as a plus sign occurs where a negative exists in our gold standard.

d) -8x - 8  is already in simplest terms and exactly matches our gold standard. Yeah!

e) 10(1.6x - 1.2 - 2.4x + 4)

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