Lola needs to sign 96 invitations. Using a stopwatch that measures time to tenths of a second, it takes Lola 5.3 seconds to
sign her full name. Going by the accuracy of the stopwatch, which is the most accurate determination for the number of
minutes Lola needs to sign all 96 invitations?
3.3 minutes
3.3125 minutes
8.48 minutes
8.5 minutes
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It would take Lola 8.5 minutes to sign all 96 invitations.

To find this, first multiply 5.3 by 96. 5.3 x 96 = 508.8. Then divide 508.8 by 60 (number of seconds in a minute) and you shall get 8.48 as an answer. Finally, you must round up to get it into the tenths place. 1-4 you round down, 5-9 you round up. Since there is an 8 in the hundredths place, you round up. Thus meaning 8.5 is your answer.

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  8.5 minutes

Step-by-step explanation:

96 times 5.3 seconds is 508.8 seconds, or 8.48 minutes. Lola's stopwatch gave her time to 2 significant figures, so we expect the product to be accurate to 2 significant figures. Using that reporting accuracy, we expect Lola's task time to be 8.5 minutes.

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