Sorry im a little late but here's how i did it.
Hope this helps! :)
Hey there!
In order for you to solve for this. You have to COMBINE YOUR LIKE TERMS
(9 )+ (5r - 9r)
(5r - 9r) = -4r
(+ 9) = +9
Answer: -4r + 9
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
The top one. they can't be expressed in a fraction or decimal
Answer:
The dolphin's final depth was -25 feet.
Step-by-step explanation: