Please help! Answer each one of the equations using Algebraic equations. Please tell me whether it is an open or closed circle on the graph.
Solve each inequality and graph its solution...

1. m/3-3≤-6

2. -b-2>8

3. -4(3+n)>-32

4. n-3+4>7

5. 8(1-4x)>40

6. -(2+2m)-2>6

7. 4(8-2b)-2b≤32

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Find the area of a parallelogram with base 15 yards and height 21 2/3