Answer:
21
Step-by-step explanation:
![f(x)=3x+6 \\ \\ plug \: x = 5 \\ \\ f(5)=3(5)+6 \\ \\ f(5)=15+6 \\ \\ f(5)=21](https://tex.z-dn.net/?f=f%28x%29%3D3x%2B6%20%5C%5C%20%20%5C%5C%20plug%20%5C%3A%20x%20%3D%205%20%5C%5C%20%20%5C%5C%20f%285%29%3D3%285%29%2B6%20%5C%5C%20%20%5C%5C%20f%285%29%3D15%2B6%20%5C%5C%20%20%5C%5C%20f%285%29%3D21)
Answer:
The ratio of boys to girls to 5:7
Let the number of boys be 5x
Let the number of girls be 7x
5x = 30
x = 6
Now just plug in 6 for the x in 7x
and number of girls 7 x 6 = 42
Answer:
The fish that is 1 7/10 lbs
Step-by-step explanation:
1 7/10 is greater in value than any of the others.
Answer:
-3x-15
Step-by-step explanation:
-3*x
-3*5