Answer Key for Math question of the week (4)

a.    d = 3

       u_n = a + n − d

       u₁₀₁ = 2 +100—3

       u₁₀₁ = 302 

b.   152 = 2 + (n −1)(3)

      150 = (n −1)(3),

      50 = n −1,

      152 = −1+ 3n

       n = 51