Expand. Your answer should be a polynomial in standard form.
(x + 1)(x+8)
Stuck? Watch a video or use a hint.

Step-by-step explanation:

Multiply using the terms using the FOIL (first, inside, outside, last) method.

x (x) =

1 (x) = 1x

8 (x) = 8x

1 (8) = 8

After combining like terms (1x + 8x) you are left with a polynomial expression in standard form.

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

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day