Higher January 2019 Paper 2R Q17

EdexcelHigherCurrent spec4 marksUpper & Lower Bounds

17 \(P = ef\)

\(e = 4.8\) correct to 2 significant figures.
\(f = 0.26\) correct to 2 significant figures.

(a) Work out the lower bound for the value of \(P\).
Show your working clearly.
Give your answer correct to 3 significant figures. (2)

\(Q = \dfrac{t}{w}\)

\(t = 2.73\) correct to 3 significant figures.
\(w = 0.04\) correct to 1 significant figure.

(b) Work out the upper bound for the value of \(Q\).
Show your working clearly.
Give your answer correct to 2 significant figures. (2)