Answer:
x+3?
Step-by-step explanation:
honestly, there is not alot of information present here. so when a hear "a number" i think variable.... which would be set up as x+3
Cost of child ticket = x
cost of adult ticket = 2x
2(2x) + 3(x) = 28
4x + 3x = 28
7x = 28
x = 28/7
x = 4
Child ticket cost 4
Adult ticket cost 8
36 go into 117 by 9 times
B is your answer
- because A) just doesn't make sense at all.
C) 4x can't factor into 6
D)-4 times 4x would make a -16x
Answer:
C) (x + 3i)(x - 3i)
Step-by-step explanation:
(x + 3i)(x - 3i)
=x² - (3i)² [(a+b)(a-b)=a²-b²]
=x² - 9i²
=x² - 9(-1) [i²=-1]
= x² + 9