Answer:
B. x=5, y=4
Step-by-step explanation:
the tiny triangle is 3x smaller so just divide those numbers by three
Answer:
19\2
Step-by-step explanation:
Let

. Then

, and differentiating both sides with respect to

gives


Now, when

, you get

You have

, so

and

. So
She will save $45 dollars a week the working is
150÷10
=15
30%=15×3
$45