Hello!
This question is an example of function composition.
Given, f(x) = 3x - 5, find f(x - 1). For this problem, we substitute x for (x - 1).
f(x - 1) = 3(x - 1) - 5
f(x - 1) = 3x - 3 - 5
f(x - 1) = 3x - 8
Therefore, the answer is choice D, f(x - 1) = 3x - 8. 
 
        
             
        
        
        
189
Because you have to turn it into a percentage in order to know how many per 1 percent. So multiply 420 by 100 and get 4.2 then you multiply it by 45 and you get 189 so 179 schools have a horse mascot
        
             
        
        
        
Answer:
X=1
Step-by-step explanation:
It’s 2 secant lines on a circle. 
https://www.mathplanet.com/education/geometry/circles/advanced-information-about-circles
Look at that website. The part says that (ab*ad)=(ac*ae)
Doing that, we get
9*(9+11x)=10(10+8x)
81+99x=100+80x
19x=19
X=1
 
        
             
        
        
        
Answer:
y = 2x + 1
Step-by-step explanation:
Remove the negative sign- 
*NOTE: when you divide the fraction of y2-y1 over x2-x1*
 
        
                    
             
        
        
        
Answer:
angle 1 → 45°
angle 2 → 90°
Step-by-step explanation:
Since AC bisects ∠DAB then the measure of angle 1 is 90/2 = 45°
Since Lines AC and BD are perpendicular then the measure of angle 2 is 90°