Seven, I think. That's what I found somewhere else.
Answer:
The answer is:
r<8
Alternative Form of the answer:
r ∈ (-∞, 8)
I'm pretty sure its x=<span><span>−79/</span><span>4
</span></span>
Answer: y = 3 or y=7
Step-by-step explanation:

what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)
Factor

y-3=0
y=3
or y-7=0
y=7
D. 18 J because it’s the most reasonable answer