125 ft = ——— yd ———- feet a. 42 yd, 1 ft. b. 41 yd, 2 ft. c. 41 yd, 1 ft. d. 40 yd, 2 ft.

Work Shown:

1 yard = 3 feet

1/3 yard = 1 foot divide both sides by 3

1 foot = 1/3 yard

125 feet = 125/3 yard ... multiply both sides by 125

Now let's simplify the fraction 125/3

125/3 = 41.667 approximately

125/3 = 41 + 0.667

125/3 = 41 + 2/3

So,

125/3 yards = 41 yards + 2/3 yard

We have 41 full yards, then plus an additional 2/3 of a yard

1 yard = 3 feet

2/3 yards = (2/3)*(3 feet)

2/3 yards = 2 feet

Therefore, 125/3 yd = 41 yd + 2/3 yd = 41 yd + 2 ft = 41 yd, 2 ft

In short, 125 ft = 41 yd, 2 ft

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50