May I please have some help? Just some advice is all, algebra is a little tricky! XD

Linda is studying the sale of a particular brand of cereals from the year 1993 to 2004. She writes the following function to model the sale of the cereal S(t), in million dollars, after t years:

S(t) = t2 + 5t + 52

Part A: What does the y-intercept of the graph of the function represent?

Part B: What is the reasonable domain of the graph of the function?

Part C: What is the average rate of change of the sale of the cereal from the first year to the fourth year? Show your work.

Question

May I please have some help? Just some advice is all, algebra is a little tricky! XD

Linda is studying the sale of a particular brand of cereals from the year 1993 to 2004. She writes the following function to model the sale of the cereal S(t), in million dollars, after t years:

S(t) = t2 + 5t + 52

Part A: What does the y-intercept of the graph of the function represent?

Part B: What is the reasonable domain of the graph of the function?

Part C: What is the average rate of change of the sale of the cereal from the first year to the fourth year? Show your work.

anonymous · Answer

@amistre64  may I please have some help?

anonymous · Answer

I'm thinking that for Part A, it's y is equal to zero.

anonymous · Answer

May I please have some help? Not the direct answer of course, just a guide through the problem.

anonymous · Answer

Hello? Please, I'm about to cry. :(