Answer:
9a-7
Step-by-step explanation:
8a-6+a-1
Collect like terms
8a+a-6-1
= 9a-7
A. 97,280 feet
B. 18.42mph
Answer:
First one is 25/2
Step-by-step explanation:
12×2+1=25/2
9×4+1=36/4
cross multiply and you get
100/
divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore
Answer:

Step-by-step explanation:
Let the regresssion line be linear because of a constant amount of money coming in. Let y be the total amount of money in the box and x the weeks of adding to the box:

We know that he puts $20 in the box from his birthday and $4 every week for x weeks. Therefore the total amount of money will be:

Answer:
They performed the same, with 80% for both of their marks.
Step-by-step explanation:
Rashmi's mark in percentage : (480/600) x 100 = 80%
Rajan's Mark in percentage : (560/700) x 100 = 80%
To find anyone's marks in percentage, you can use :
(marks scored/full marks) x 100.