8. One evening, the temperature decreased by 5°F during the first hour after sunset, and then decreased by 2°F each hour for the next 7 hours. The
temperature increased by 14.5°F the next morning and then increased by 11°F
that afternoon. What was the total change in temperature?

-4

step-by-step explanation:

the answer is:

the lateral area is equal to

to find the lateral area of the square pyramid, first we need to find the perimeter of the base, and then, find the lateral area using the following formulas:

where,

s, is the base length

slant height, is the height of a the side of the pyramid

we are given:

now, calculating the perimeter of the base, we have:

then, calculating the lateral area:

hence, we have that the lateral area is equal to

have a nice day!

the correct answer is c) 2.