Mrs. manning's current savings is 156% of what she had in her account last month. if she has $1170 in her account this month, what was her last month's savings? a. $700 b. $725 c. $750 d. $775

c

Step-by-step explanation:

C. $750

Step-by-step explanation:

With the given information in the problem, setting up a proportion with equivalent ratios (fractions) would be a good way to solve for the missing variable, or the amount that was in Mrs. Manning's savings account last month .  Since we know that her current balance of $1170 is 156% of what she had last month we can set up the following proportion:

 where 'x' is the amount from her savings last month, which would represent 100%.  

Using cross-multiplication and division, we can solve for 'x':

(1170)(100) = 156x  or 117000 = 156x

Divide both sides by 156:  

Solve for 'x':  x = $750 which is the amount in her last month's savings.

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation: