Question

PLEASE HELP ME WITH THIS ITS 10 POINTS!!! Im begging you

Answer 1

Answer:

x = 5 weeks

Step-by-step explanation:

                 MX + B

Jacob:       7x + 40

Savannah: 5x + 50

Equality:

7x + 40 = 5x + 50

subtract 5x from both sides of equation

2x + 40 = 50

subtract 40 from both sides of equation

2x = 10

divide by 2

x = 5 weeks

Answer 2

Answer:

• j = 7x +40; s = 5x +50
• x = 5

Step-by-step explanation:

Jacob is saving $7 per week, so after x weeks, he has saved 7x in addition to the $40 he started with:

  j = 7x +40

Similarly, Savannah is saving $5 per week in addition to the $50 she started with, so her savings will be ...

  s = 5x +50

Jacob and Savannah will have the same amount of money when ...

  j = s

  7x +40 = 5x +50 . . . . substitute for j and s

  2x +40 = 50 . . . . . . . . subtract 5x from both sides

  2x = 10 . . . . . . . . . . . . subtract 40 from both sides

  x = 5 . . . . . . . . . . . . . . divide both sides by 2

_____

Comment on the equations

I used j and s for the amounts that Jacob and Savannah accumulated, because I like to use variable names that remind me what they stand for. You may be expected to write these as y = equations, where y stands for the amount each person has saved.