An iPhone costs £825 in London, €950 in Paris and $1,200 in New York. Using £1 = €1.12 and £1 = $1.43, state the lowest price of the iPhone in £. Give your answer to 2 dp.

4 + 5 7/9= 9 7/9

step-by-step explanation:

1/2*qr*rs

step-by-step explanation:

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.