<h3>
Explanation:</h3>
There is a theorem :

Proof: open the brackets on right side of equality by using distributive property
RHS = a(a+b) - b(a+b)
RHS = 
RHS =
= LHS
Using the above theorem you can solve every question you asked:
Answer:
40%
Step-by-step explanation:
The total cost without tax would be $261, sales tax would be $15.66, if we add them together the answer would be $276.66
17 * 0 + -2.
Now we rewrite the equation and make it 17 * 0 - 2 and u get -2.
Answer: 8.3 minutes
Step-by-step explanation:
1 mile is to 1.60934km so 93 million miles is:
= 93 * 1.609
= 149,637,000 km
Travelling at 300,000 km per second, the number of seconds it takes is:
= 149,637,000/300,000
= 498.79 secs
In minutes this is:
= 498.79/60
= 8.3 minutes