Use the substitution method to solve the system of equations. Choose the
correct ordered pair.
x + y = 3
y= 9
A. (-6,9)
B. (12,9)
C. (-12,9)
D. (6,9)

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Find the value of x. give reasons to justify your solutions! l, m ∈ kn