Answer:
36
Step-by-step explanation:
3(15.9 - 3.9)
3 · (15.9 - 3.9)
3(15.9) - 3(3.9)
47.7 - 3(3.9)
47.7 - 11.7
36
Answer:
They earn $256 on the ninth day of school.
Step-by-step explanation:
A geometric sequence(in which each term is the previous term multiplied by the ratio) has the following format:

In which r is the common ratio.
We can also find the nth term as a function of the first term, by the following equation:

In which

In this question:
On the first day, $0.50. So
.
Day two $1.00, day three $2.00.
So

Then

How much do students earn on the ninth day of school?

They earn $256 on the ninth day of school.
Answer:
D . 9 .1/13
Step-by-step explanation:

Answer:
2x +7
The coefficient of the variable is 2
Step-by-step explanation:
x+x+3+4
Combine like terms
2x +7
The coefficient of the variable is 2
Answer:
24, pie + 2
Step-by-step explanation: