Answer:
351.75
Step-by-step explanation:
402/8=50.25
50.25x7=351.75
 
        
             
        
        
        
The correct answer is c y=5
        
             
        
        
        
Give up bro u got the rest of the questions right
        
                    
             
        
        
        
The equations are in slope intercept form which is 
y = mx+b
m is the slope of the equation. slope is rise/ run meaning that if a slope is 2, you can also say 2/1. this means you go up 2 squares and to the right 1 point. if the slope is negative, it looks like a downhill and the line falls left to right. if the slope is positive, it looks like uphill and the line falls right to left. 
the x is what the slope is multiplied by but isn’t significant in graphing because it’s always just x
the b represents the y intercept. the y axis is the vertical line on the graph. for example if b = 7, then the line goes through 7 on the graph and basically tells us that (0,7) is a point on the line. 
for y= x + 7, the slope is 1. that equation is just saying y= 1x+7 but the one is unnecessary usually because it’s implied that the x means 1x 
i attached a picture of the graphed lines
 
        
        
        
B: x=4 hope this helped!!