How do you calculate the first steps of einsteins riddle?

Sorry I just saw this but the answer would be (please give brainliest) 

A: Be sure the formula is in the form t=d/v because we want to find the value of t.   Additional info needed:         d = distance from Sun to Earth                  (an average value because orbit of Earth is not a perfect circle)         v = velocity (or speed) of light   And, if we want the answer in minutes, we may need to convert seconds to minutes.  The value of v (meters/sec) and d (meters) should be compatible, or we have to convert them also.

B: d=vt       d/v = t        [divide both sides by v]

C:d =   93,000,000 miles        (rounded)

      v = 671,000,000 miles/hr       (the speed of light, rounded)

D:t = d/v = 93000000/671000000 = 0.14 hours     (rounded)     This is (0.14)*60 = 8.4 minutes   or    8 minutes 24 seconds

E: 128100/5280=24.621 miles

   t=24.261/335.92

   t=0.07222 hours

   t=0.07222 times 3600

   t=260 seconds

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Step-by-step explanation:

x= -2, y= -7

Step-by-step explanation:

(Solve for y)

-3x+y=-1

1. add 3x to both sides

y=3x-1

(Substitute y=3x-1 into 2x-3y=17)

1. 2x-3(3x-1)=17

2.Simply it (Distributive Property)

3. -7x+3=13

(Solve for x)

1. Subtract 3 from both sides

2.  Divide both sides by -7

3. x=-2

(Substitute x=-2 into y=3x-1)

1.  y= 3 x -2-1

2. y= -7

Therefore ,

x= -2

and

y= -7