Answer:

Step-by-step explanation:
step 1
Find the area of the trapezoid (brownie pan)

step 2
To find the number of days , divide the area of the brownie pan by 20 square centimeters of brownie

3 * ln 4x = 13
<span><=> </span>
<span>ln 4x = 13/3 </span>
<span><=> </span>
<span>4x = e^(13/3) </span>
<span><=> </span>
<span>x = e^(13/3) / 4 </span>
<span><=> </span>
<span>x ~ 19.05 </span>
Answer:
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40.
Step-by-step explanation: