b) β7
Step-by-step explanation:
If p= 2q^3 - 1, what is the value of q when p is 13
Hence:
13 = 2qΒ³ - 1
We add 1 to both sides
13 + 1 = 2qΒ³ - 1 + 1
14 = 2qΒ³
We divide both sides by 2
14/2 = 2qΒ³/2
7 = qΒ³
qΒ³ = 7
We take the cube root of both sides
βqΒ³ = β7
q = β7
Option b is the correct option