Answer:
multiply first equation with 3 and second equation with 5
an = a1 +d(n-1)
a4 =a1+d(4-1)
-4 = -1+d(3)
add 1 to each side
-3 = 3d
d= -1
an = -1 +-1 (n-1)
an = -1 -n +1
an = -n
Choice D
y=29.62017
11 hours babysitting
7 hours music lesson
Step-by-step explanation:
(11*5) + (7*12) = 139
Right. Your answer is still no because your x-value needs to be positive.
