Answer:
385 kilometers 
Step-by-step explanation:
Divide 374 by 34 to get the unit price
Then multiply the unit price by 35 
 
        
             
        
        
        
2(x-3)=2x-6 This is distributive property.
2(x-3)= 2x - 2*3 = 2x-6
 
        
             
        
        
        
Answer:
The number of elephant ears that must be sold to maximize profit is 400.
Step-by-step explanation:
Given that,
The profit that a vendor makes per day is given by 
P(x)= - 0.004x² +3.2 x -200
where x is number of elephant ears.
P(x)= - 0.004x² +3.2 x -200
Differentiating with respect to x
P'(x)= - 0.008x+3.2
Again differentiating with respect to x
P''(x) = -0.008
For maximum or minimum P'(x)=0
- 0.008x+3.2=0
⇒0.008x=3.2

⇒ x = 400

Since at x=400, P''(x)<0, the profit is maximize.
P(400) = -0.004×400²+3.2×400-200
           =440
The number of elephant ears that must be sold to maximize profit is 400.
 
        
             
        
        
        
Converting their ages to months:
12*12=144months + 3 months
=147 months
Now, 3 is equivalent to 147 months;
4 will be equivalent to;
4*147/3
= 196 months
= 16 years and 4 months