Answer:
i dont get this but yea i wish i could bud sorry
Step-by-step explanation:
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#1. Number of small cubes in the large solid ~


#2. Volume of each small cube ~



#3. Volume of large solid is :



(r+1)th term of (a +x)^n = nCr a^(n-r)x^r
so 5th term of (3x - 3y)^7 = 7C4 * (3x)^(7-4) (-3y)^4 (NOTE r = 4)
= 35 * 27x^3 * 81y^4
= 76545 x^4y^3
35w + 150 = s
$185, $220, $255, $290, $325
(Add $35 each week for 5 weeks)