PLLSSS HELP ALL PARTS PLS

 J = 5w + 5

B = 4w + 12

They will have the same amount in week 7.

Step-by-step explanation:  Look at the difference from one week to the next: for Jocelyn it's 5 per week, for  Ben it's 4 per week

That's where the 5w and 4w come from.  

Then look at the starting amounts in week 0: for J it's 5, for B it's 12.

Whatever they have in any future week (if no withdrawals or interest are made)  is the starting amount + the amount added per week.

To find our when they will have equal amounts, write an equation with the two expressions:

5w + 5 = 4w + 12   Then solve for w.

5w -4w +5 -5 = 4w-4w +12 -5  Subtract 4w and 5 from both sides ("cancel" 0's)

w = 7

They will have equal amounts in the 7th week.

You can substitute 7 for w in the equation to check:

5(7) + 5 = 4(7) + 12

35 + 5 = 28 + 12

40 = 40   True!  They will each have $ 40 in week 7.

900 degrees

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