All of the following are equivalent to 2(2a + b) + 8, except 4a + 2b + 8 2(2a + b + 4) 4(a + b + 2) 4a + 2(b + 4)

4(a + b + 2)

Step-by-step explanation:

2(2a + b) 8 equals 4a + 2b + 8.  4(a + b + 2) equals 4a + 4b + 8

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2