Answer: 600
Step-by-step explanation:
3s + 4 = 28 Lisa is 4 years older than three times his age. 4 years older would mean +4 , and the 3 times his age is 3s because the s represents sammys age
Answer:
b
Step-by-step explanation:
ANSWER

EXPLANATION
Since the parabola has the (0, 0) and the directrix at y=2.
The equation is of the form

where (h,k) is the vertex.
The vertex is half way between the directrix and the focus.
The vertex will be at (0,1)
and is the distance from the vertex to the focus which is 1.

