Number of Adults = a
Number of children = 2a
Number of people in a group = 45
so
a + 2a = 45
3a = 45
a = 15
Number of Adults = 15
Number of children = 30
Not sure if it's right but I tried:
(16,-12) assuming x=16,y=-12
y=5x-4
-12=5(16)-4
-12=240-4
-12=236
(Divide maybe?)
-12=236
236 divided 12= 19.6
Answer:
She is doing a mistake of calculating interest after 9 months in place of after 12 months.
Step-by-step explanation:
Samantha deposit $300 in an account that earns an annual interest rate of 2.5%.
Now, Samantha after nine months of deposit computes the simple interest.
She is doing a mistake of calculating interest after 9 months in place of after 12 months.
The calculation of interest should be on a yearly basis (i.e. 12 months) as the interest rate is 2.5% per year. (Answer)
Imagine what the graph would look like. Does it open upwards or downwards?
5x - 1 has a positive slope of 5 and it is reflected horizontally. The graph would be shaped like a V. A limited segment, or none, of the graph is below a certain value of y, and the rest outside it is above.
Hence, the solution must be a < x < b.
|5x - 1| < 1
5x - 1 < 1
x < 2/5
|5x - 1| < 1
5x - 1 > -1
x > 0
0 < x < 2/5
