Answer:

Step-by-step explanation:
Parallel lines have the same slope
The slope of the line shown is 
Therefore, the slope of the parallel line will also be 
Answer:
$48
Step-by-step explanation:
16 x 3 = 48
Answer:
25
Step-by-step explanation:
Each of the 16 "ratio units" representing all 80 dancers must stand for ...
(80 dancers)/(16) = 5 dancers
Then 5 "ratio units" representing seventh-grade dancers will stand for ...
5 × 5 dancers = 25 dancers
___
Another way to figure this is to write the proportion ...
(seventh-grade dancers)/(all dancers) = 5/16
seventh-grade dancers = (all dancers)×(5/16) = 80×5/16
seventh-grade dancers = 25
Normally I'd love to help, but put in a picture. I'm confused.