Answer:
Fot this parabola the coefficient for squared term is 7
Step-by-step explanation:
The formula for vertex equation is:
if vertex is at (-3,-1) and in the formula the vertex is (k,h), we replace this values
The other point of this parabola is (4,0), so we replace it in the formula below:
12
1/2
List the possibilities
b b g
b b b
b g b
b g g two out of four have oldest two boys 2/4 = 1/2
x-intercept