Answer: 8 minutes, 16 minutes, 24 minutes, 32 minutes
Step-by-step explanation: 12x2=24. 8x2=16. 12x3=36. 8x3=24. 12x4=48. 8x4=32.
Answer: 6+4x=26, 4x=20
Step-by-step explanation: 6+4x=20 is the initial equation but completely multiplied by two, so you can know without solving that it is equivalent.
If you solve the equation, 2x+3=13 (subtract 3 from both sides)
2x=10 (divide both sides by 2)
x equals 5.
if you plug in 5 as x to 4x=20, you get 20=20, which is a true statement, so this choice is also correct. You could also solve to prove x equals 5 in this equation as well. Divide 20 by 4 and you get x=5.
Answer:177
Step-by-step explanation: -3'3(2+1) 2(1)-3(-5)
=-27(3) ×-2 +15
=-81×(-2)+15
=162+15
=177
4x -2(3x+7)
Use the distributive property:
4x - 6x -14
Combine like terms:
-2x - 14
B increase because it says that he went 4 points more
