Answer:
6x+18
Step-by-step explanation:
Multiply 3 to all the numbers on the parenthesis
Hope this helps!

Length of the room is 5 m and width is 5 + 2 = 7 m.
Hope this helps.
r3t40
Altitude is another word for height so it would be the first answer
Answer:
Answer: <u> </u><u> </u><u>3</u><u> </u><u>+</u><u> </u><u>1</u><u>0</u><u>i</u><u> </u>
Step-by-step explanation:

Answer:
If the increases are roughly the same, then linear is best. If the multiple factor is roughly the same, then an exponential is best. If the rate at which the increase increases is roughly the same (so A-B=1, B-C=3 C-D=5.2), then quadratic is best.
Step-by-step explanation: