There is a sales tax of $21 on an item that cost $217 before tax. a second item. cost $93 before tax. what is the sales tax on the second itme?

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Awoman who is 64 inches with a shoulder width of 16 inches. write an equation relating the height h to the width w. find the height of a woman who has ashoulder width of 18.5 inches