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I’m struggling please help thank you always

I’m struggling please help thank you always-example-1

2 Answers

5 votes

Answer:

A) -3

B) 7

C) -13

D) 5x+2

Explanation:

For A, B, and C substitute the value stated in the parenthesis.

A) f(0) means to find the value when x=0, so we substitute 0 where x is in the function.


5(0)-3

Then use PEMDAS and multiply first and then subtract 3 from the product.


5(0)=0\\0-3=-3

B) Take the same steps as before with a different value. Substitute 2 for x.


5(2)-3\\5(2)=10\\10-3=7

C) Also the same thing as the previous problems. Substitute -2 for the value of x.


5(-2)-3\\5(-2)=-10\\-10-3=-3

D) Similar to above substitute x+1 where x is.


5(x+1)-3\\

Then distribute 5(x+1) to get


5x+1(5)\\5x+5

Then simplify the equation


5x+5-3=5x+2

User Hjl
by
8.0k points
2 votes

Answer:

- 3 , 7 , - 13 , 5x + 2

Explanation:

A

to evaluate f(0) substitute x = 0 into f(x)

f(0) = 5(0) - 3 = 0 - 3 = - 3

B

substitute x = 2 into f(x)

f(2) = 5(2) - 3 = 10 - 3 = 7

C

substitute x = - 2 into f(x)

f(- 2) = 5(- 2) - 3 = - 10 - 3 = - 13

D

substitute x = x + 1 into f(x)

f(x + 1)

= 5(x + 1) - 3 ← distribute each term in the parenthesis by 5

= 5x + 5 - 3 ← collect like terms

= 5x + 2

User Muhammad Nizami
by
8.0k points

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