Make r the subject of the formula

r=

Step-by-step explanation:

t(r-3)=r

tr-3t=r

tr-r=3t

r(t-1)=3t

r=

a4 = 3*4 = 12.  3,6,9,12. 3) an = 3n – 5 a1 = 3*1-5 = -2 a2 = 3*2 – 5 = 1 a3 = 3*3-5 = 4 a4 = 3*4 – 5 = 7 -2,1,4,7. 5) an = 3n a1 = 31= 3 ... 21) an = (-1)n; a50. a50 = (-1)50 = 1. 23) an = ;a12. #25-40: write an expression for the nth term of the sequence. 25) 2,4,6,8,10…. an = 2n ...