If a ball is thrown upward at  29.4 meters per second from the top of a building that is 25 meters high, the height of the ball can be modeled by S=25+29.4t-4.9t^2, where t is the number of seconds after the ball is thrown.

A. Find the t-coordinate and S-coordinate of the vertex of the graph of this quadratic function.

1. The t-coordinate of the vertex of the graph of this quadratic function is t= (answer pls)

2. The s-coordinate of the vertex of the graph of this quadratic function is (answer pls)

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