Answer:
C) 7c+6s-63
Step-by-step explanation:
set up this equation because you are adding the two expressions

combine like terms

Answer:
Male students have a greater median.
Step-by-step explanation:
The median is the bold line (look at the attached image)
The male's median is greater than 60.
The female's median is less than 60.
Hope that helps!
Answer:
8
Step-by-step explanation:
3( 2 + 2 ) - 4
3( 4 ) - 4
12-4
8
50 km/h = 4 hours
60 km/h = x hours
50x = 60×4
50x = 240
x = 4.8 hours