Answer:x=2
Step-by-step explanation:2x + 8x - 1 = 19
10x=20
x=2
Answer:
(I am assuming this is just approximation since there are no other numbers, just to be clear :))
Algebra: about 450 students
Geometry: about 250 students
Calculus: about 50 students
I believe it is 20 and 15