Yes, Bobby will have enough money if he saves for 9 weeks. You can find this through either substituting w for 9 in the equation, or solving the equation itself.
Substituting:

Substitute w for 9.

Simplify.

Solve.
255 is greater than 250, so yes, he will have enough money saved.
Solving the equation:

Original Equation

Subtract 30 from both sides.

Divide both sides by 25.
The number of weeks he needs is 8.8. When rounding it up, you get 9.
483,600,000 miles
4 - hundred millions place
8 - ten millions place
3 - millions place
6 - hundred thousands place
0 - ten thousands, thousands, hundreds, tens, and ones place
I hope this helps you
5=7x+0.1+10x-0.2
17x=5.1
x=5.1/17
x=3/10
x=0.3
<span>15x+35 = 5(3x + 7)
hope that helps</span>