PL HELP M marina said that -x - 8 + 5y +9x can be simplified to 13y - 8
what was her error

Step-by-step explanation:

-x-8+5y+9x

=8x+5y-8

maybe instead of x is y

that's the only way it will be 13y

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!