the number of teams who entered in a 3-on-3 charity basketball tournament can be modeled by function t, where x is the number of years since the tournament first started.
t(x)=4x+24
the entire fee paid by each team to enter the tournament can be modelfied by function f, where x is the number of years since the tournament first started.
f(x)=5x+45
which function, r, best represented the total entry fees collected in the sixth year since the tournament first started?
a. r(x)=9x^2+29x+69
b. r(x)=20x^2+1080
c. r(x)=20x^2+300x+1080
d. r(x)=9x+69