
let's plug in the value of y :
Answer:

Step-by-step explanation:
Given

Required
Evaluate when n = 12
Substitute 12 for n in 

Simplify the fraction


Answer:
C
Step-by-step explanation:
Angle CAD and angle BAD are congruent.
10x - 7 = 3x+ 7
10x - 3x = 7 + 7
7x = 14
(7x)/7 = 14/7
x = 2
Plug in x as 2.
10(2) - 7
20 - 7
= 13
It’s just 5 you divide 9 into 45 and get a whole number of 5
Answer:
A Exactly 1 solution
Step-by-step explanation:
if we express both equations as y = mx+b
we will see that both equations have different slopes (i.e "m" values are different).
By definition, 2 straight lines of different slopes will intersect at only one location (i.e there is only one solution)