= sin O - cos O - (sin^2 O + cos^2 O + 2 sin O cos O)
= sin O - cos O - ( 1 + sin 2O)
= sin O + cos O - sin 2O - 1
The slope will be -1/2. If you put it into slope intercept form of y=mx+b, mx will always be the slope.
Answer:
It would be Theo, Tina, and lastly Tony
$1.45
1.50 times .05= 0.075
the sales tax was 0.075 cents, so if you subtract that from $1.50, you get the price before sales tax
20 is 85% of the number 23.5294