64x^6 - 192x^5 + 240x^4 - 160x^3 + 60x^2 - 12x + 1
Step-by-step explanation:
Plan B:
2:5 = 0.4 red to 1 white
1:4 = 0.25 red to 1 white
Students might also scale up using part-to-whole-ratios and come up with 35 parts total and 14 parts red for Plan A and 35 parts total and 7 parts red for Plan B.
X * .65 = 143
Divide both sides by .65.
x = 220
143 is 65% of 220.
