Kiara tutors 20 hours each month at the library. she tutored for 2 1/3 hours the first week and 1.5 hours the second week. how many more hours does she need to tutor this month? what type of problem is this, and why? a part-whole problem, because the time she still needs to tutor is unknown. a part-whole problem, because the time tutored this week is part of the time tutored last week a comparison problem, because the number of hours tutored last week is compared to the number tutored this week a comparison problem, because the number of hours tutored already is compared to the total number of hours she will tutor

This question belongs to simple algebric equation, where we need to add or subtract fractions by finding a common denominator.

Given total hours = 120

Number of hours tutored for 1st week =2 1/3 hours = 7/3 hours

Number of hours in the 2nd week = 3/2 = 1.5 hours

Let the number of more hours she needs to teach be x

=

23 + 6x = 120

6x = 97

x = 16.167

Hence Kiara needs 16.167 more hours.

And this belongs to a part-whole problem, because the time she still needs to tutor is unknown.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

answer: the answer is b. i think hope i got it correct

step-by-step explanation: