Answer:
He is B) 45 years old
Step-by-step explanation:
If he was 30 when she was born, he was 40 when she was 10, and he was 45 when she was 15.
15 x 3 = 45
Edit: It can actually be any of them....
Answer:
y = 1/5x - 5.
Step-by-step explanation:
Use point-slope form of a straight line:
y - y1 = m(x - x1)
Here m = the gradient = 1/5 and (x1, y1) = (0, -5) so we have:
y - -5 = 1/5(x - 0)
y + 5 = 1/5x
y = 1/5x - 5.