Answer:
12x + 50
Y - intercept = 50
Slope = 12
Step-by-step explanation:
The y - intercept represents the original registrational fee even if you have never taken lessons.
The slope represents what you have to pay every time you take a lesson.
Answer:
either 449/25 or 11/25 depends on the -14/5 or
Step-by-step explanation:

if it the first one then the answer should be 449/25 but if ut the second one it should be 11/25 .
u just substitute the -14/5 to x then solve
Im not sure but I think it is like 65
Answer:
61
Step-by-step explanation:
a = 17
d = 21 - 17 = 4
12th day: 17 + 4(12 - 1)
17 + 44
61
X=7
(15x+3)=108
x=7
if you plug 7 in for x
(15(7)+3) it equals 108