She spent $30.83. Explanation is up above :)
An= A1 + d(n-1)
An= 170 + (-85)(n-1)
An=170-85(n-1)
An= 170-85n+85
Answer: An=255-85n
Call the weght of the first truck "

". We then know that the truck after that is 2 tons more, and the next and the next. i.e:



We also know that total is 32 tons.





Therefore the trukcs weigh 5,7,9 and 11 tons for a total of 32 tons.
Converting to pounds, the trucks weigh 10,000, 14,0000, 18,0000 and 22,000 pounds.
Answer:
It would be the 2nd one
Step-by-step explanation:
(2-5i)(3+i)
use foil method to expand it into standard form
6+2i-15i+5i^2
5i^2-13i+6