13 I believe as 31-5=26/2=13 Hope you'll find this helpful
Answer:
B
Step-by-step explanation:
Using the rule of exponents
= 
Given
y = 12 × 
← substitute x = - 2 into the expression
y = 12 × 
= 12 × 
= 12 × 
= 
= 
→ B
F(x)=x^2+3x-7, x=3
f(3)=3^2+3(3)-7
f(3)=9+9-7
f(3)=11
The red arrows mean the lines are parallel. Since all angles are equal, the larger triangle is similar to the smaller one. Then corresponding sides have the same ratio
(4x -2)/9 = (3x+2)/12
x(4/9 -3/12) = (2/12) +(2/9)
x = (7/18)/(7/36) = 2 . . . . . . . . . corresponding to the 3rd selection
