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tia_tia [17]
2 years ago
10

Given ƒ(x) = 3x + 9, find x when ƒ(x) = 21.

Mathematics
2 answers:
Dima020 [189]2 years ago
7 0
3x + 9 = 21
3x = 12
x = 4
maksim [4K]2 years ago
6 0

Answer:

4

Step-by-step explanation:

ƒ(x) = 3x + 9; Substitute 21 for ƒ(x).

21 = 3x + 9

21 − 9 = 3x

12 = 3x → x = 4

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Step-by-step explanation:

3 0
3 years ago
Please help they are separate questions please help me with this!
monitta

Answer: Mary makes $1160, Steven makes $142.50

Step-by-step explanation:

Facts

MARY

8% commision on everything she sells

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The first question about Mary asks how much commision she makes. To find that, lets find 8% of 14,500

8% of 14,500= 0.08x14,500= 1160

Therefore, Mary makes $1,160 in commision.

STEVEN

Facts

He makes 15% in commision for the supplies he sells

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6 0
2 years ago
If F is the midpoint for EG then, x = ?
guapka [62]
I hope this helps you



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3 0
3 years ago
Read 2 more answers
-3b-(-2)=4b-12 show work please ASAP
makvit [3.9K]

Solve the equation:

– 3b – (– 2) = 4b <span>– 12

</span>– 3b + 2 = 4b – 12

– 3b = 4b – 12 – 2

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– 3b – 4b = – 14

– 7b = – 14

        – 14
b = ———
         – 7


b = 2   <———   solution.


I hope this helps. =)

3 0
3 years ago
Read 2 more answers
The line below are parallel. If the green line has a slope of -1/2, what is the slope of the red line?
MAXImum [283]

The line below are parallel so they have same slopes

If the green line has a slope of -1/2, the slope of the red line is also - 1/2

Answer

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4 0
3 years ago
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