Answer:
40 girls
Step By Step Explanation:
assume boys = y girls = x
y = 1/2x + 10
y = 30
30 = 1/2x + 10
1/2x = 20
x = 20 *2 = 40
girls is 40 boys is 30
Answer: 1000
Step-by-step explanation:
20x100=2000 and then 2000/2=1000
Substitute x = -5
|2* -5 -1| + 10
|-10-1| + 10
21
Answer:
h(1) = 1
h(4) = 5
Step-by-step explanation:
Since 1 is in the interval 1 ≤ x ≤ 3, you must substitute 1 into the expression 
So, h(1) =
= 1
Since 4 is in the interval x > 3, and all values of x > 3 gives an output of 5, then h(4) = 5
Answer: 12 cups
Step-by-step explanation: