Tommy picked 15 crayons from a box. if 3 out of the 5 crayons were yellow how many crayons are yellow? 9

13

6

3

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)