Yesterday morning, the temperature was -11ËšF. The temperature increased 7ËšF by noon and then decreased 4ËšF by nightfall. What was the temperature at nightfall last night?

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

your answer is c. 97 (don't delete this again)

step-by-step explanation:

i think its doubled. let me know

step-by-step explanation: