Karen's batting average was 0.444. she was at bat 45 times. how many hits did she get?
by the way i might ask a lot of questions because i'm in 6 : )

What is the rotational symmetry of a wheel

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.