10% of 4200 is 420
2% of 4200 is 84
420+84 is 504
4200-504=3696
Hope this helps
Answer:
C
Step-by-step explanation:
To find the value of the function at x = - 2
Locate x = - 2 on the x- axis then go up vertically until the line is met.
The read the corresponding value of y from the y- axis
x = - 2 ⇒ y = 2 → C
In the given equation above relating the number of races the runner had run and the finishing time,
f = -1.2n + 38.1
It can be deduced that the initial finishing time is approximately 38.1 and that the time is reduced by 1.2 minutes in every race that the runner had run. Therefore, the answer to this item is letter B.
Train 1 = x + 6.4
Train 2 = x
(x) + (x + 6.4) = 717.6
2x + 6.4 = 717.6
2x = 711.2
x = 355.6
Train 1 = 355.6 + 6.4 = 362 mph
Train 2 = 355.6 mph
Hope this helps!! :)
