Answer: Second choice; f(x) = -3x + 4
Step-by-step explanation:
You pretty much want to isolate y, f(x) is also acceptable as y. The term f(x) means the value of the function when you input the x value.
Subtract 9x from both sides to get 3y = 12 - 9x, then divide everything by 3 in order to get y completely alone. You get y = 4 - 3x or f(x) = 4 - 3x
Different way you could potentially write this answer:
y = 4 - 3x
y = -3x + 4
f(x) = 4 - 3x
f(x) = -3x + 4
Each one equals each other and are all perfectly acceptable
The ratio is 72.10:5
Which is when divided by 5, 14.42 per person
That times 3 is 43.26
Hope this helps
Answer:
63
Step-by-step explanation:
the numbers are in ratio 7 : 9 = 7x : 9x ( x is a multiplier )
given the sum of the numbers = 112 , then
7x + 9x = 112 , that is
16x = 112 ( divide both sides by 16 )
x = 7 , then
9x = 9 × 7 = 63 ← value of larger number
Answer:
(a) 
(b) 
Step-by-step explanation:
GIVEN: Auditoriums are often designed so that are fewer seats per row for rows closer to the stage. Suppose you are sitting in row 
in an auditorium and notice that there are 
seats in your row. It appears the row in front of you has 
seats and the row behind you has 
seats. Suppose this pattern continues throughout the auditorium.
TO FIND: a) How many seats are in the first row b) How many seats are in the 
row?
SOLUTION:
total seats in 
total seats in 
total seats in 
as it clearly form an A.P. with 
(a)
let total seat in first row be 
as total seats in 
total seats in first row are
(b)
total seats in be 
total seats in row are
