7x+5y is the answer
yepyep
        
             
        
        
        
Answer:
  
Step-by-step explanation:
Lets solve the first half.

Second one:

Now compare.....Not the same right??
So your answer is:  
Hope this helps :)
 
        
             
        
        
        
(x+4)²=-63
....brainliest would be appreciated 
 
        
             
        
        
        
5(x + 30) 
x + 30 represents the number of minutes per day he practices
5 is the number of days he practices
so 5(x+30) = the total number of minutes he practices in 5 days
For example, if he practices the piano for 20 minutes per day and the violin for 30 minutes per day, he practices a total of 50 minutes per day. For 5 days that would be 5 x 50 = 250 minutes in 5 days.
Plug that into the equation
5(x+30) = 5(20+30) = 5(50) = 250 
        
                    
             
        
        
        
Equation: y= 9x+ (y-intercept)
Step-by-step explanation:
equation in slope-intercept form is y=mx+b. <em>m</em> represents the slope of the line, and <em>b</em> represents the y=intercept, which is where the line crosses the y-axis.