Elaine wants to purchase books. On Monday, she purchased 5 red bags of books and 9 blue bags of books for a total of 78 books. On Tuesday she purchased 7 red bags of books and 4 blue bags of books for a total of 49 books. How many books are in a red bag? How many in a blue bag? 5x+9y=78
7x+4y=49

if the system of equations on above represents what is happening in this problem, define x and y.

Let x= Let y=

What evidence from the system of equations helped you determine which was x and which was y?

Sienna planned a trapezoid-shaped garden, as shown in the drawing below. she decides to change the length of the top of the trapezoid-shaped garden from 32 ft to 24 ft. which expression finds the change in the scale factor?

Which table shows a proportional relationship between miles traveled and gas used?

You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function.how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions