Hack
for y=ax^2+bx+c
the xvalue of the vertex is -b/2a
and the y value is found by subsituting that for x
so
-b/2a
h(t)=2x^2+4x+7
a=2
b=4
-b/2a=-4/(2*2)=-4/4=-1
the y value
h(-1)=2(-1)^2+4(-1)+7
h(-1)=2(1)-4+7
h(1)=2+3
h(1)=5
(-1,5) is da vertex
Answer:
6. y=20
7. y=3
8. y=3
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
yes
Answer:
of course its true
Step-by-step explanation:
7.5 Devide 30 by 4 and it is 7.5 that is how much she saved
