What is the value of w? -8w + 5= 45

Subtract 5 from 45 which equals 40 so -8w can be alone. Then divide 40 by -8w you will get -5.

w=-5

step-by-step explanation:

; fx

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!