Renata wins a $20 gift card to an online music site. After Renata purchases 16 songs, the gift card has a remaining balance of $
0. Which equation represents the relationship between y, the remaining balance on Renata’s gift card, and x, the number of songs purchased? 4x + 5y = –100
5x + 4y = 80
4x + 5y = 16
5x + 4y = 20
From reading the problem we see that y = 0 and x = 16. To find the correct equation, simple plug in the values for x and y for each equation and see which equation is true.
Imo you only need to be taught the basic of math and other things like geometry and algebra should be optional, although math is a core class along english/language arts which is why it’s necessary
