exam Maths Puzzle Numerical Ability

In my class today, we learned rates. Here is one of my problems: 55mi/h=?ft/s I have no clue what to do. I wrote out 55mi * ____ = ____ft
1 h s
What am I supposed to do next?

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exam Other Question
the equation y - 2 =3(x + 2) is in point-slpoe form
y=mx+b
y=3x+6+2
y=3x+8
b is the y intercept Please help me on how to figure out the vertex of the equation 2y=x2(this is x squared)-2x-5.