Answer:
120
Step-by-step explanation:
45 + 15 (6 -1)
45 + 15 (5)
45 + 75
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
In order to get the inverse of equation, we will interchange the variables and solve for x and y as follows.
whereas,
or x =
Now, on interchanging the variable we will get the equation as follows.
y =