Answer: Maybe it is x+8x+12 meters
Step-by-step explanation:
10% means for every 100 she spend 10
in 800 there are 8 100 thus she speds 80
or 10% to decimal form is

Answer: Never true.
Step-by-step explanation: Distribute the numbers: 4 times x is 4x, 4 times 3 is 12. Then you have the equation: -x+4x +12 = -12. Now, choose a random number, maybe -4. A negative plus a negative cancels out so you are left with 4-16(Because you distribute the number) +12 = -12. 4-16 is -12. -12 plus 12 equals 0.
6 1/4 :) Is this correct?