Answer:
Is this what you need? Also slope = 10/1 and y intercpet = -1
Step-by-step explanation:
Answer:176 psychology textbooks and 98 Biology textbooks were sold.
Step-by-step explanation:
Let x represent the number of psychology textbooks that were sold.
Let y represent the number of biology textbooks that were sold.
textbook store sold a combined total of 274 psychology and biology textbooks in a week. This means that
x + y = 274 - - - - - - - - - - -1
The number of psychology textbooks sold was 78 more than the number of biology textbooks sold. This means that
x = y + 78
Substituting x = y + 78 into equation 1, it becomes
y + 78 + y = 274
2y = 274 - 78
2y = 196
y = 98
x = y + 78 = 98 + 78
x = 176
It is given Nadia goal is to sell 100 tickets out of which she has already sold 17 tickets .
Total number of tickets = 100
Number of tickets sold =17
Number of tickets left = 100-17=83
Nadia can sell 10 tickets in a day
Number of days required to sell remaining 83 tickets if 10 tickets is sold everyday = 83÷10=8.3
Nadia will need minimum of 8+1=9 days to sell the tickets.
Option D 9 is the right answer.
Answer:
See explanation
Step-by-step explanation:
a. 
b. 
c. 
d. 
