Which statement describes the graph of this polynomial function?
f(x)= x5 - 6x4 +9x2
the graph crosses the x-axis at x = 0 and touches the x-axis at x = 3.
the graph touches the x-axis at x = 0 and crosses the x-axis at x = 3.
the graph crosses the x-axis at x = 0 and touches the x-axis at x = -3.
the graph touches the x-axis at x = 0 and crosses the x-axis at x = -3.

In the past, professional baseball was played at the astrodome in houston, texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t2 + 45t + 1. will a baseball hit straight up with this velocity hit the roof of the astrodome? use the discriminant to explain your answer.

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?