Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).
x3 − 5x2 + 25
−x3 + x2 − 25
5x3 + x2 + 13
5x3 + 5x2 − 19

The answer is D

Step-by-step explanation:

Let's simplify step-by-step.

3x2−3+9x3−(4x3−2x2+16)

Distribute the Negative Sign:

=3x2−3+9x3+−1(4x3−2x2+16)

=3x2+−3+9x3+−1(4x3)+−1(−2x2)+(−1)(16)

=3x2+−3+9x3+−4x3+2x2+−16

Combine Like Terms:

=3x2+−3+9x3+−4x3+2x2+−16

=(9x3+−4x3)+(3x2+2x2)+(−3+−16)

=5x3+5x2+−19

=5x3+5x2−19

whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation:

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