Answer:
B, C, F
Step-by-step explanation:
Given:

Subtract the second equation from the first equation:

Option B "The x coordinate of the solution is 9" is ture
Substitute it into the first equation:

Option F "The y coordinate of the solution is -8" is true.
Point (9,-8) is in the IV quadrant, so option C is true.
Answer:
180
Step-by-step explanation:
For each boy you choose, you choose one of the 15 girls.
This is the counting principle.
12 * 15 = 180
Answer: 180
13 m ...?.........;;;;;;;;;
Answer:
A. 1
Step-by-step explanation:
✔️To find f(g(1)), first find g(1).
From the mapping given for g(x), the corresponding value of x = 1, is 0.
That is,
g(1) = 0
✔️Next is to find f(g(1)) by replacing x with 0 in f(x) = 3√x + 1
Thus:
f(g(1)) = 3√0 + 1
f(g(1)) = 0 + 1
f(g(1)) = 1