Since I can't draw, you could draw 3 pizzas and cut them all in half, so each person would get half a pizza.
The domain is {-9,-4,3,9} and the range is {2}.
Inserting 7 into the function, you get f(7)=2*7 which is 14. Therefore, someone can complete 14 guitar lessons in 7 months.
Add the two equations:
2x + 4y = 16
-2x - 3y = -6
2x + -2x = 0
4y -3y = y
16-6 = 10
When you add the equations you get y = 10
Now you have a value for y, use the first equation to solve for x:
2x + 4(10) = 16
2x + 40 = 16
Subtract 40 from both sides:
2x = -24
Divide both sides by 2
X = -12
Answer: x = -12 and y = 10
The curved dome has the area of half a sphere with radius 8 in. That is
... A = 2πr² = 2π(8 in)² = 128π in²
The lateral area of the cylinder is
... A = 2πrh = 2π(8 in)(7 in) = 112π in²
The area of the flat base is
... A = πr² = π(8 in)² = 64π in²
Then the total area of the figure is
... (128π + 112π + 64π) in² ≈ 304·3.14 in²
... = 954.56 in² . . . . matches the 2nd selection
