Simplify the expression 9 − x2 as much as possible after substituting 3 sin(θ) for x. (Assume 0° < θ < 90°.)

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

Landon wrote that 3−2.6=4. which statement about his answer is true?

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?