Which sentence represents the equation? 3r+4= 10
O A) The sum of three times x and four equals ten.
O B) Three times the sum of x and four equals ten.
O C) The product of three times x and four equals ten.
OD) Three times the product of x and four equals ten.

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

The graph shows the distance kerri drives on a trip. what is kerri's speed?

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?