The London Eye is an observation wheel with a radius of 78 m. Rides consist of one complete revolution, which takes 40 minutes, and begin on a platform 4 m above the ground. The height, h(t), in metres, of a rider above the ground as a function of time, t, in minutes, can be expressed as h(t) = a sin[b(t c)] + d. - Oh(t) = 39 sin Oh(t) = 39 sin Ⓒh(t) = 78 sin Oh(t): = 78 sin 75 40 75 Which of the following equations could represent the function h(t)? 40 7 20 75 O 20 € 3 3 (t -7. 7.5) Height (m) 0 (t -7.5 +82 7.5)] + -78 (0,4) (t – 7.5)] + 82 (t — 7.5) + 78 15 Time (min) 30

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