Y=6x-24
substitute 18 for y
18=6x-24
add 24 on both sides
42=6x
divide both sides by 6
7=x
Answer:
2 hours
Step-by-step explanation:
If she was 5km away and is now 2km away she walked 3 km. To walk 3 km at 1.5 km/h you have to divide 3km by 1.5km to get 2 hours
Answer:
36
Step-by-step explanation:
Let the number of girls in club be 
Number of boys = 30
Number of boys is 10 times half the number of girls
i.e. 
Total number of boys and girls in club = 30 + 6 = 36
Answer:
Step-by-step explanation:
Simplify.
4n + 12 + 7n
16n + 7
23n
11n + 12
4n + 19
32.273 rounded to the tenths place is 32.2.