Use the quadratic formula to find the positive solution to \(5x^2 - 4x - 7 = 0\). Give your answer to 1 decimal place.

A number is rounded to 1 decimal place. The result is 72.9. What is the lower bound for the number?

£2500 is invested at 2.1% annual compound interest. How much is the investment worth after 5 years?

Find the length of side AB. Give your answer in centimetres to 1 decimal place.

Solve \(3x - 7 = 2(x + 4)\).

Given the sets below, select the numbers in \(A \cap B\).

Find the highest common factor of \(2^3 × 3 × 5^2\) and \(2^5 × 5 × 7\).

Find the size of angle ACB. Give your answer to 1 decimal place.

Find the value of \( \frac{32 \times 18}{\sqrt{98}}\). Write out your whole calculator display.