Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 4 - An Introduction to Functions - 4-5 Writing a Function Rule - Practice and Problem-Solving Exercises - Page 265: 16


h=21t+40 The height of helicopter after 45 seconds will be 985 ft

Work Step by Step

h is the height of a helicopter, and it increases by 21 feet everytime for each second and since the helicopter started the climb at 40 feet above the ground, the function rule should be h=21t+40 To find height after 45 seconds plug it in the equation. h=21t+40 h=21(45)+40 h=945+40 h=985 ft
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