posted by Esther .
following the guidelines of the food and drug administration dale tries to eat at least 5 servings of fruit each day. For the first six days of one week, she had 4,5,4,5, 4, and 4 servings. How many servings of fruit should Dale eat on Saturday to average at least 5 sevings pers day for the week?
I won't get tired of thanking you for your genorosity. Thank you so much!
Algebra 1 -
you will need the following to be true ...
(4+5+4+5+4+4+x)/7 = 5
26 + x = 35
x = 9
check, the average of 4,5,4,5,4,4, and 9 is
(4+5+4+5+4+4+9)/7 = 5