Find the value of the expression below for r = 4 and t = 2.

Question

t3 – r + 20 ÷ r

Answer 1

Substituting r = 4 and t = 2 into the expression:

(2^3) - 4 + (20 / 4)

= 8 - 4 + 5

= 8 + 5

= 13