Help a

L=8

Step-by-step explanation:

area of a rectangle = length x width

given:

area= 20 square units

width =2.5 units

find the length by substituting :

20=2.5 x L

L= 20/2.5=8

that's it :)

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!