Lee ann paid in advance for 20 hours of day care. after one week, she had used 12 3/4 hours. how many hours of day care does she have left ?

How many zeros does the function f(x)=4x3-x2+1 have

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?