pickellbrindy
Answered

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Juan always saves the same amount from his weekly allowance. The table shows how much he has saved at different times.



How much will Juan have saved in 14 wk?



$




Juan’s Savings


Weeks
3 6 9 12
Amount saved 19 28 37 46


Sagot :

RhysH
y = ax + b
the difference in numbers is 9 and the difference in weeks is 3 so
a = 9/3 = 3
b = 19 - 9 = 10

the equation is
y = 3x + 10

sub 14 into equation as x
y = (14 x 3) + 10
y = 42 + 10
y = $52
he will have saved 52 
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