12 because the 23 3/8 is rounded down and the 11 2/9 is rounded down as well
I think it is ae if i get it wrong sorry goodluck
Y= 3.11x+ 17.59
I got this equation by doing 23.81-20.70 to find m, which is 3.11.
Then to find b, or y-intercept, I subtracted 3.11 from 20.70 to get the origin all price and got 17.59
R=25
a^2+b^2=c^2
7^2+24^2c^2
49+576=c^2
625=c^2
c=25
