Y= ax² -4x +3
-b/2a is x - coordinate of the vertex,
line of symmetry x=-2, x=-2 is a coordinate of the vertex also, because the line symmetry has vertex.
x= -b/2a
x= -2, b= -4
-2=-(-4)/2a
-2=4/2a
-2=2/a
a=2/(-2)=-1
a= - 1
4h +8=20
Hours worked times rate paid plus 8 must equal 20
18 tons and 42 pounds divided by 3=6 tons and 14 pounds
Step-by-step explanation:
second one
explanation: trust me bro
<span>y-axis, x-axis, y-axis, x-axis</span>
