Before sunrise, the temperature was 22.4°F below zero. By noon, it had risen 12.8°F. What expression can be used to find the temperature at noon? –22.4 – 12.8
–22.4 + 12.8
22.4 – 12.8
22.4 + 12.8

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

answer: 12   they all have at least 28 days

step-by-step explanation: haha