Use the scenario to answer the question. tyrone was asked to write the recursive and explicit formula for the sequence {−4,−7,−10,−13,…}. he wrote the recursive formula as a1=−4 and an=−4−3. he wrote the explicit formula as an=−4−3(n−1). where did he make a mistake?
in his recursive formula, he should have added 3 instead of subtracting 3 to get an=−4+3.

in his explicit formula, the −4 is not necessary. he should have written an=−3(n−1).

in his explicit formula, he should have used n−3 instead of n−1 to get an=−4−3(n−3).

in his recursive formula, he should have the term an−1 instead of −4 to get an=an−1−3.

The last option: In his recursive formula, he should have the term an−1 instead of −4 to get an=an−1−3.

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.