Answer:
A.16 weeks
B. $195
Step-by-step explanation:
A.
345-15x=345-240
345-15x=105
15x=240
x=16
B.
345-240=105
20x15=300
105+x=300
x=195
All real numbers / all x
if you're asking for range as well then its -1<x<1
Answer:
3 to 5
Step-by-step explanation:
To find the number of boys, take the total students and subtract the girls
72 -45 =27
We want the ratio of boys:girls
boys:girls
27:45
Divide each number by 9
27/9:45/9
3 : 5
