Answer:
The first one
Step-by-step explanation:
g(x) = ax² + bx + c
Point (0,0):
0 = a.0² + b.0 + c
c = 0
Point (2,1):
1 = a.2² + b.2 + c
4a + 2b + c = 1
But c = 0. Then:
4a + 2b = 1
Another point: (- 2, 1):
1 = a.(- 2)² + b.(- 2) + c
4a - 2b = 1
{4a + 2b = 1
{4a - 2b = 1
4a + 2b = 4a - 2b
4a - 4a = - 2b - 2b
- 4b = 0
b = 0
4a + 2b = 1
4a + 2.0 = 1
4a = 1
a = 1/4
The formula is:
g(x) = (1/4)x²
I hope I've helped you.
$12 for 3 pies = $4 for 1 pie
$10 for 2 pies = $5 for 1 pie
store A is the better buy
Answer:
x^
2
+
2
x
+
5
Step-by-step explanation:
The expression is not factorable with rational numbers.
Answer:
Originally
The number of coins in the first box was 
The number of coins in the second box was 
Finally
The number of coins in the first box is 
The number of coins in the second box is 
Step-by-step explanation:
Let
x-----> number of coins in the first box originally
y-----> number of coins in the second box originally
we know that

-----> equation A
-----> equation B
substitute equation A in equation B






Find the value of x

therefore
Originally
The number of coins in the first box was 
The number of coins in the second box was 
Finally
The number of coins in the first box is 
The number of coins in the second box is 