Answer:
A function corresponds to one unique value of x and y hence A
3x + 7(3x + 2) + 4x - 5
Distribute the parenthesis.
3x + 21x + 14 + 4x - 5
Add like-terms
28x + 9 is your simplified expression.
Answer: 20
Step-by-step explanation:
By CPCTC,
![3x-10=2x+10\\\\x=20](https://tex.z-dn.net/?f=3x-10%3D2x%2B10%5C%5C%5C%5Cx%3D20)
Answer: B, 5.5
Step-by-step explanation:
4+4+4+5+5+6+6+6+6+9=55
55/10=5.5
Perimeter means the sides add up to 12.
Rectangles have two pairs of equal sides.
2(one side) + 2(another side) = 12
2 (one side + another side) = 12
(one side + another side) = 6
To draw a rectangle with a perimeter of 12 units, the two adjacent sides must add up to 6.
1 + 5
2 + 4
3 + 3