Eight scores have an average of six. scores of 15 and x increase the average to 7. find x

Issof claims that the scale factor is 1/2. which statement about his claim is correct

What is the value of x when x + 7 = 21?

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.