Trejon rides his bike 27 miles each day. Which equation can be used to find r, the number of miles he will ride in 8 days? 24 r Total Miles Ridden 21 21 21 21 21 21 21 21 O A 21 = 1 = 8 O B. 8 xr= 21 OC. 21 : 8=r O D. 8 x 24 = 1​