Help? I wasn’t in class so I don’t know what to do.

Which graph represents the following piecewise defined function?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100