Give answers please!

9.) -3

10.) -4

11.) -5

12.) -2

Step-by-step explanation:

1.) You need to plug in a number from the table into x on the equation

2.) Once you plug in the number divide that number by 3

3.) Once you divide it subtract by 3 from the number you got

4.) Then you get the solution and plug it into the table

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²