Answer:
Step-by-step explanation:
All real numbers or is it multiple choice
Answer:
y=3
Step-by-step explanation:
3x+2y=9
Let x =1
3*1+2y=9
3 +2y = 9
Subtract 3 from each side
3-3+2y=9-3
2y = 6
Divide each side by 2
2y/2 = 6/2
y =3
4. no
5. no, because the second one is 40 words per minute
6. 8x2 =16 miles per hour going up
40 divided by 2= 20 miles per hour going down
4 minute difference
((i apologize if any are wrong! good luck!
