Add Estimate:4
Subtract Estimate:0
Answer:
40
Step-by-step explanation:
Carter's speed is 60, and Vitor's speed is 100. To find how much slower, Carter was, subtract Vitor's speed from Carters. 40 is the difference.
It's shifted two units to he left because: y=(x-h) means that the graph is shifted h units to the right and when the sign is positive you know that h is negative (subtracting a negative number is the same as adding the absolute value of that number )
We let x be the number of tablespoon of chemical solution (c) that is to be added to a certain amount of water. The equation that would best represent the given scenario is,
B = 1200 - 75x
Substituting 300 to B of the equation,
300 = 1200 - 75x
The value of x from the equation is 12. Therefore, 12 tablespoon of chemical should be added per gallon. Since there are 500 gallons of water, the amount of chemical that should be added is 6000 tablespoons.