Which one of the following expressions is represented by the diagram? A. 3 + (−2) + 1
B. 3 − (−2) + 1
C. 3 + (−5) − 3
D. 3 + (− 5) + 3

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

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?

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively