At 7: 00 pm the temperature is 10°f for the next 4 hours, the temperature decreases by 3°f each hour. what is the temperature at 11: 00 pm write the expression then solve

What’s the answer ? use the picture to see the problem

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

In terms of x, find an expression that represents the area of the shaded region. the outer square has side lengths of (x+5) and the inner square has side lengths of (x-2), as shown. area: a1 x + a2 square units submit