Answer:
Emanuel did a mistake in her first step.
Step-by-step explanation:
The given expression is
Emanuel solve this problem but she did a mistake in her first step. She distributes negative sign with 1 and 2 both which is incorrect. We can write negative sign with either 1 or 2 but not both.
Correct steps are:
Step 1:
Step 2:
Step 3:
Therefore, she did a mistake in her first step.
You multiply 1.77 by every gallon
if you were to buy 10 gallons it would be 17.70$
Answer:
3.5 Hours
Step-by-step explanation:
245÷70= 3.5
Distance
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Time
Write 2 equations, multiply amount bought per month by number of months and add to the starting values :
Marko = 45 + 4M
Tamara = 61 + 2M
Set the equations equal to each other and solve for number of months:
45 + 4m = 61 + 2m
Subtract 45 from both sides:
4m = 16 + 2m
Subtract 2m from both sides:
2m = 16
Divide both sides by 2:
m = 8
Answer: 8 months