x^4 - 10 x^3 + 23 x^2 + 20 x - 50
an equation :
on monday rodney ate 1/4th of the sandwich = 3/12
on tuesday he ate 1/3rd of the sandwich = 4/12
therefore in total he has eaten = 3/12 + 4/12 = 7/12
thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.
pls mark as brainliest.
if the probability is 1/12, 75 people will receive a $25 gift card