Easy -1.8 Part (a) is a straightforward linear inequality requiring only expansion and collection of terms. Part (b) is routine index manipulation using the same base. Both are basic C1 skills with no problem-solving required, making this significantly easier than average.
4. (a) Solve the inequality
$$4 ( x - 2 ) < 2 x + 5$$
(b) Find the value of $y$ such that
$$4 ^ { y + 1 } = 8 ^ { 2 y - 1 } .$$
\hfill \mbox{\textit{Edexcel C1 Q4 [6]}}