Answer:
<h3><em>
D. 880 = 45d + 70; 18 days.</em></h3>
Step-by-step explanation:
We are given fixed monthly charge = $70.
The cost of preschool per day = $45.
Number of days = d.
Total cost of d days = cost per day × number of days + fixed monthly charge.
Therefore, we get equation 
880 = 45×d+70
<h3>880 = 45d +70.</h3>
Now, we need to solve the equation for d.
Subtracting 70 from both sides, we get 
880-70 = 45d +70-70
810=45d
Dividing both sides by 45, we get

18=d.
Therefore,<em> 18 days Barry attended preschool last month.</em>
<em>Therefore, correct option is D option.</em>
<h3><em>
D. 880 = 45d + 70; 18 days.</em></h3>
 
        
             
        
        
        
Dang I’m dumb byeee use photo math it’s a app
        
             
        
        
        
Answer:
Hi! The correct answer is x=-19/2
Step-by-step explanation:
<em><u>~Solve for x by simplifying both sides of the equation, then isolating the variable~</u></em>
 
        
             
        
        
        
Substitute.
2x+(2x -15) = -3
4x -15 = -3
Add 15 to both sides 
4x = 12
Divide by 4
X=3
2(3) + y = -3
6+y=-3
-6 from both sides
Y=-9
(3,-9)
        
             
        
        
        
Answer: your 
Pages per hour: 42
Hours per page: 1/42 of a hour 
Step-by-step explanation:
14 x 3 = 42
1 hour divided by 42 pages = 1/42 of an hour per page