Answer:
17.B
19. C
20.C
Step-by-step explanation:
17.
19.
20.
Answer: 1.427 x 10^9
Step-by-step explanation:
Hope this helps :)
The guest they can invite so that the cost they pay will be the same at both wedding catering halls is 18.
<h3>What is a system of equations?</h3>
A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
The given equation is
900+50x=450+75x
To solve;
900 - 450 = -50x +75x
450 = 25x
x = 450 /25
x = 18
The guest they can invite so that the cost they pay will be the same at both wedding catering halls is 18.
Learn more about equations here;
brainly.com/question/10413253
#SPJ1
