1+1=? is anyone else bored???

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

In the diagram, gef and hef are congruent. what is the value of x