A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month. :
x = 0.8x + 72
How many people who became members of the site that month were between 30 and 40 years of age?
112
288
360
432
+4473 x = 0.8x + 72
Subtract 0.8x from both sides: 0.2x = 72
x = 72/0.2
x = 360.
***I assumed both were the same variable until I realized one is italicized...what is the non-italicized x?***
+4473 x = 0.8x + 72
Subtract 0.8x from both sides: 0.2x = 72
x = 72/0.2
x = 360.
***I assumed both were the same variable until I realized one is italicized...what is the non-italicized x?***
