Answer: Ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Step-by-step explanation:

or equivalently

We often write variable side-byside without the multiplication sign in algebra. It also applies to terms with indices. For instance,

We may, often also add a dot at the middle of both terms as another version of multiplication sign for better readability if the terms are more complicated, for instance

and

Answer: 0
I didn't see an 'x' so I was very confused but I simplified and got "0"
They're asking you to fill in the distance from the sun to the planet in kilometers.
Mercury is 57,900,000 kilometers from the sun.
Venus is 107,477,000 km from the sun at its closet point.
Earth is the third planet closest to the sun, and at it's closest point is about 146,000,000 km away.
Mars, at its closest point to the sun, is 206,000,000 km away.
Jupiter's average distance from the sun is 779,000,000 km.
Saturn's average distance from the sun is 1.4 billion km.
Uranus' average distance from the sun is 2.88 billion km.
Lastly Neptune's average distance from the sun is 4.5 billion km.
I hope this is what you're looking for
The charge should be $6. I believe I set this up correctly; let me know if there are any errors. Hope this is helpful & accurate.