| Exam Board | WJEC |
|---|---|
| Module | Unit 1 (Unit 1) |
| Year | 2022 |
| Session | June |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Exponential Equations & Modelling |
| Type | Simple exponential equation solving |
| Difficulty | Moderate -0.8 This is a straightforward logarithmic equation requiring only the standard technique of taking logs of both sides and applying log laws to isolate x. It's a routine procedural question with no problem-solving element, making it easier than average, though not trivial since students must execute the method correctly and use a calculator appropriately. |
| Spec | 1.06g Equations with exponentials: solve a^x = b |
Showing all your working, solve the equation $2^x = 53$. Give your answer correct to two decimal places. [3]
\hfill \mbox{\textit{WJEC Unit 1 2022 Q10 [3]}}