Yolanda wants to know whether the number of songs a person downloads is a function of age. She asks four of her cousins how many songs they have downloaded to their smartphones. Yolanda records the information in a table. Yolanda notices that the number 320 shows up twice in the table. She concludes that the relation cannot be a function. Is her reasoning correct? A. Yes. This relation is not a function because one output has two different inputs.
B. No. A function can have any input and output values.
C. No. A function can have two outputs that are the same as long as they have different inputs.
D. Yes. This relation is not a function because one input has two different outputs.

Which of the following expressions is equal to 2x^2+8

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.