Cody and earl started week 1 of their garden with 20 tomatoes. each week they eat 10 tomatoes and sell all that remain, but they grow 3 times as many as they sell. how many tomatoes will they have at the start of week 5?
a.420
b. 1570
c. 150
d.1620

P = plant, e = eat, s = sell
Week 1: p 20,
             e 10,
             s 10
Week 2: p 30 (3 x 10),
             e 10,
             s 20
Week 3: p 60,
             e 10,
             s 50
Week 4: p 150,
             e 10,
             s 140
Week 5: p (140 x 3) 420, e 10, s 410
At the beginning of Week 5, the have (plant) A. 420 tomatoes.
Hope this helps :)

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