Which polynomial represents the difference below ?

C. -7x⁸ + 5x⁷ - 11x + 2

Step-by-step explanation:

5x⁷ - 8x + 2 - (7x⁸ + 3x)

= -7x⁸ + 5x⁷ - 8x - 3x + 2

= -7x⁸ + 5x⁷ - 11x + 2

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)