Lily swims a 100 meter race she swims the first half and 27.8 seconds she swims the second half and 30. 12 seconds about how long does it take lily to swim the whole race choose the best estimate

It takes Lily 57.92 seconds to finish the race.

Step-by-step explanation:

First lap: 27.8

+                                                     27.8+30.12=57.92

Second lap: 30.12

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.