<span>3.4-5-10.4 = -12
Hope this helps!
</span>
2) C: 4+d
3) A: x-3
4) C: 5(1-f)
I know that this is a few weeks late...
but hope this helps!
Answer:
there are no real solutions
Step-by-step explanation:

there is a rule that says

so we have

and we have the definition

so we have

and using the quadratic formula we get that
there are no real solutions
Wouldn’t it be 60? 60 has both 12 and 15 as factors and is less than 100. 12 x 5 = 60 and 15 x 4 = 60.