The difference of two numbers, a and b, is 21. the difference of 5 times a and two times bis 18. what are the values of a and b?

4,1
-19,40
20,1
30,9
-8,-29

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

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$