First you plug in the variables:
(-3)(2)+(6)(-3)(4)
Multiply:
-6+(-18)(4) 
-6+-72
Add and your answer comes out to be:
-78
        
             
        
        
        
Answer:
y = 1
Step-by-step explanation:
To find the y-intercept (s), substitute in 0 for x and solve for y.
y = 2/5 x (0)+1 
y-intercepts (0, 1)
 
        
                    
             
        
        
        
Answer:
25
Step-by-step explanation:
square 7 and 24 to get 625. Then square root it to get 25
 
        
             
        
        
        
Answer: The number is 0.75 or 3/4
Step-by-step explanation:
let x = the number.
Now set up an equation: The product of a number (x) and -4 = -4x. So -4x is subtracted from the number - x.     x-(-4x)
Then, that equals 3 more than the number (x) = x+3
So the equation is x-(-4x)=x+3. 
Then, solve the equation! 
x-(-4x)=x+3
x+4x=x+3  (Distribute the negative to the parentheses)
5x=x+3  (Combine like terms)
4x=3  (Get the Xs on one side by subtracting x from both sides)
x=0.75 or 3/4  (divide by the coefficiant, 4, on both sides)
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:1
1/2 years which is 1 year and 5 months.
Explanation:
The formula for simple interest is
You can either substitute the given values first and the solve for 
T, or you can transpose the formula to have 
T as the subject.
T=100xSIPR
T=100 x 637.50 
T=100×637.502500×17
T=1.5
As time is always in years, this means it was for 
112 years which is 1 year and 5
months