Question

So I have an assignment related to parametric equations. It has 5 questions in it and I have so far completed #1 and #2. However, #3 I can not do. It confuses me. These parametric equations must be graphed.
1) x = 3 sin^3(t)
y = 3 cos^3(t)

2) x = 7 sin(t) + sin(7t)
y = 7 cos(t) + cos(7t)

3) x = 2t
y = t + 5, -2 ≤ t ≤ 3

4) x = 2t – 1
y = t2 + 5, -4 ≤ t ≤ 4

5) x = 6 sin t
y = 6 cos t, 0 ≤ t ≤ 2π