In a hand of cards, the ratio of black cards to red cards was 5 to 3. If the hand contained 15 black cards, which of the following proportions could be solved to find the number of red cards, r? (1) 15 5 3 r  (3) 3 15 8 r  (2) 5 15 3 r  (4) 15 5 8 r 

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done