What is the ratio of drivers to cars in a stock car race 1: 1. 5: 10. 2: 10 10: 5

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?