15. 1hour 7minutes and 5seconds
A)

B)

C)

D)

You were correct, the exact answer is A. The others do not equal 23 besides that one. Good job!
Answer:
-8
Step-by-step explanation:
let the other number be x
according to the question equation is
-12x = 96
x = 96/-12
x = -8
1 5/6 because you have to first find half of 3 which is 1 1/2 then you have to find half of 2/3 which is 1/3 then you have to find a common denominator then add. After that simplest form.
Answer:

Step-by-step explanation:
GIVEN: On a
question test students gain
points for each correct answer and lose
points on each incorrect answer. If everyone required to give an answer to each question.
TO FIND: the formulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c.
SOLUTION:
Total number of incorrect questions 
Total marks deducted due to incorrect question 
Total correct questions 
Total marks scored 
Total raw marks 


ormulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c is 