Objective
Interpret feedback on mock Paper 2 and repair a priority misconception.
Calculator: Non-calculator core; calculator optional only for checking where labelled.

Recall
Retrieve the key fact or method needed for paper 2 feedback and repair.
Core practice
£420 grows 7% for two years. Find value to nearest penny.
Reasoning
A calculator input 420×1+0.07² is used for growth. Identify the bracket error.
Exam-style
Solve an exam-style problem involving paper 2 feedback and repair. Show working, include a check and interpret your answer.