Jarrell should purchase 7 lbs of ground beef.
Number of attendees = 20
Fraction of burger per person = 1/3 lbs
Total fraction of burger required to feed 20 persons :
Number of attendees × fraction per person
20 × 1/3 = 6.667
The number of whole grouhd beef that should be purchased is 7 lbs
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2 3/5 is 2.6 as a mixed fraction
Hint to start out the problem:
eg. For f(4), use the first expression, (x-3)^2 because 4 is greater than 1.
The best way to solve a problem like this is guess and check.
y = 2x + 10
2 = 2(2) +10
2 = 4+10
2 = 14 NO
y = 2x + 10
4 = -3(2) +10
4 = -6 +10
4 = 4 YES . . . C is your answer
