B.
sin^2x + cos^2x =1
hence Sin^2x-1 = - cos^2x
Answer:
t = 6/5
Step-by-step explanation:
Step 1: Define
k(t) = 10t - 19
k(t) = -7
Step 2: Substitute and Evaluate
-7 = 10t - 19
12 = 10t
t = 6/5
Well, I saw my teacher solving the test herself, and then grading papers off of her paper that she solved. My teacher made the answer key for the tests.
I hope this helps you
x= -3
f (-3)= -2.(-3)-3
f (-3)= 6-3
f (-3)=3
