In a class of 25 students, 18 were math majors, 12 were computer science majors, and 7 were dual majors in math and computer science. How many students were majoring in math only? How many students were majoring in Computer Science only? How many students were not math or computer science majors?

b

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

answer is x<