Answer:
Step-by-step explanation:
Hello ;
y= -6
If it takes 3 hours at 30 km per hour than that 90 km total distance and at 45 km per hour that would mean that distance would be travelled in 2 hours. So the answer should be 2 hours
Answer:
3(b+7)=6
Sum means adding, so 3 is multiplied by (b+7)