Answer: I think its 7/10
Step-by-step explanation:
192000 = 28x + 40(6000 - x)
192000 = -12x + 240000
192000 - 240000 = -12x
-48000 = -12x
4000 = x
The number of sales for the $28 is 4000 and the number of sales for the $40 is 2000.
Answer:4
Step-by-step explanation:
The equation of a vertical parabola is:
y = a (x − h)² + k,
where (h, k) is the vertex and a is the coefficient.
We know the vertex is (-5, -2), so:
y = a (x − (-5))² + (-2)
y = a (x + 5)² − 2
We also know the parabola passes through (-4, 2).
2 = a (-4 + 5)² − 2
2 = a (1)² − 2
2 = a − 2
a = 4
So the coefficient of the squared expression is 4.
Song write in one month = 7/5
song write in 50 months = 7/5 × 50 = 70
70 song she writes in 50 months