Higher June 2017 Paper 5 Q4

OCRHigherCurrent spec3 marksPercentages

4 Rashid invests money into an account which pays a fixed rate of compound interest each year.
The value, £\(V\), of his investment after \(t\) years is given by the formula

\[V = 1250 \times 1.03^t.\]
(a) How much money did Rashid invest? [1]
(b) What rate of compound interest is paid each year? [1]
(c) Circle the graph that best represents the growth in Rashid’s account.
Three sketch graphs of V against t: the first a straight line starting above the origin; the second a curve starting at the origin and getting steeper; the third a curve starting above the origin and getting steeper

[1]