\[3, 5, -5,...\]
13. The first term in the sequence of numbers shown above is 3. Each even-numbered term is 2 more than the previous term and each odd-numbered term, after the first, is -1 times the previous term. For example, the second term is \[3+2\], and the third term is \[(-1) \times 5\]. What is the 55th term of the sequence?
(A) -5
(B) -3
(C) -1
(D) 3
(E) 5

14. In the \[xy\]-plane, the equation of line \[\ell \] is \[y = 2x + 5\]. If line \[m\] is the reflection of line \[\ell \] in the \[x\]-axis, what is the equation of line \[m\] ?
(A) \[y = -2x - 5\]
(B) \[y = -2x + 5\]
(C) \[y = 2x - 5\]
(D) \[y = -\frac{1}{2}x - 5\]
(E) \[y = -\frac{1}{2}x + 5\]

Bỏ qua Tra từ điển
Hiện, ẩn khối
Tra từ điển

 
Từ cần tra