Select the correct answer. Which equation represents the vertical line passing through (1,-9)?
A.
x = -9
B.
X = 1
y = -9
D. y = 1

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Precalculus question, image attached.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?