Just numbers c-e-f
pl it’s really important appreciate if you’d answer thx

C) 2z^2 + 2z - z = 2z^2 + z

E) (-30j) / (-6) = 30j / 6 = 5j

F) 23a^3*22a^5 = 23*25a^8 = 506a^8

Step-by-step explanation:

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!