Answer
a)1
b)8
c)8 \times 10^{1}
Work Step by Step
a)1.45815 to 1.458 to 1.5 to 1
b)8.32466 to 8.325 to 8.3 to 8
c)84.57225 to 84.57 to 85 to 8\times 10^{1}
d)132.5512 to 132.6 to 1.32\times 10^{2} to 1\times 10^{2}
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.