Answer: √y
<u>Step-by-step explanation:</u>
5 + r - 2 = 9
your answer would be 6
300(1.08)^5
440.798423
88(3.7+4.3)-2*2.6
88(8)-2*2.6
704-2*2.6
704-5.2
698.8
I hope it helps!
Please mark Brainliest if it does!:-)