Paul invested twice as much money in an account paying 4% interest
than he did in an account paying 3% interest. if the total interest paid
was $165, how much did he invest in each?
at 4% and $
at 3%

Step-by-step explanation:

Let x represent the amount invested at 3%. Then the amount invested at 4% is 2x, and the total interest is ...

  3%·x + 4%·2x = 165

  11%·x = 165 . . . . . . . . . simplify

  x = 165/0.11 = 1500

  2x = 3000

Paul invested $3000 at 4% and $1500 at 3%.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

the answer on e2020 was d.