I believe the equation is y=350+150x with y being the total amount of money in his account and x being the number of months..Paul starts with $350, which is the y-intercept (starting value) of the equation then the slope is 150 because his total savings increases by $150 for every month he saves without making any withdrawals. I apologize if I'm wrong but I hope this helps.
6 goes in the box, as it is being multiplied by the other numbers.
Answer:
First way:
1/10 + 1/10 + 1/10 + 1/10 + 1/10 + 1/10 + 1/10
Second way:
4/10 + 3/10
Y=-3
Add 2 to both sides the -2 &-8
-8 becomes -6 then divide by 2
Y=-3