Ten less than half of what number is 30?

x = 80

Step-by-step explanation:

Let x be the unknown number

1/2 x - 10 = 30

Add 10 to each side

1/2x -10+10 = 30+10

1/2x = 40

Multiply each side by 2

1/2x * 2 = 40*2

x = 80

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

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