Please show the work aswell

6x + 9

Step-by-step explanation:

2(3x + 1) + 7, distribute 2 through the parentheses

↓

6x + 2+7

↓

6x + 9

Hope this helps!:)

Call the 1% account X

After 3 years the interest it earned is X times 1% for 3 years

=X(.01)(3)

=0.03X

The 2.5% account has (1000 - X) dollars

It earns (1000-X(.025)(3)

=(1000 - X)(.075)

=75-.075X

The total of the interest is 55

Therefore .03X + 75 -.075X = 55

- .045X = 55 - 75

-.045X = -20

.045X = 20

45X =20000

X = 20000 / 45

X = $ 444.44

Therefore the amount invested id the 2.5% account is

1000 - 444.44

=$ 555.56

After 3 years the interest it earned is X times 1% for 3 years

=X(.01)(3)

=0.03X

The 2.5% account has (1000 - X) dollars

It earns (1000-X(.025)(3)

=(1000 - X)(.075)

=75-.075X

The total of the interest is 55

Therefore .03X + 75 -.075X = 55

- .045X = 55 - 75

-.045X = -20

.045X = 20

45X =20000

X = 20000 / 45

X = $ 444.44

Therefore the amount invested id the 2.5% account is

1000 - 444.44

=$ 555.56

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