2x-3=6
2(3)-3=6
multiply the parenthesis
6-3=6
I hope this helped (:
You remember from SOH CAH TOA that
.. Cos = Adjacent/Hypotenuse
.. cos(C) = 80/82 = 40/41 . . . . . . . . . . . seems to match the last selection
Which expression has a value that is equivalent to 5n+13 when n=-15? n^2+13x
Eg: 24936
Place value of 4 is 4x10 raised to the power of 3 or 4000
It would go to 15k because it take away 20k from 35k
