The answer would be 3.8.
So, to get 3 to 4, you would have to multiply 3 by something to get to 4. So you would divide 4 by 3 and get 1.3. So then you would divide 5 by 1.3 to solve for k, since k times 1.3 equals 5.
5 ÷ 1.3 = 3.8.
x+6 is x+6. It's an expression. Not sure what you need help with.
The answer to = 2x27 is f(x)
Ok , lots of questions=lower standard of explanation
just answers
5. 8.5 times 10^12
6. 0.001260-7,003,000
7.3.843 times 10^4
9. x=1
10. 7^(x+5)=49^(x+3)
11. 1.03
12. 25,700(0.85)^x
13. 10a√a
14.
15.6√3
16.
17.
18.
19.√109
20. (8,(3/2))
21. 5 units