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3 years ago

Roberto got $30 for his birthday. He decides to save that

Mathematics

1 answer:

shutvik [7]3 years ago

7 0

After 10 weeks, the boys will have same amount in savings.

Step-by-step explanation:

Given,

Roberto already have $30.

Amount saved each week = $5

Let,

x be the number of weeks.

R(x) = 30+5x

Amount saved by Jack each week = $8

J(x) = 8x

For same amount, the functions will be equal.

R(x) = J(x)

$30+5x=8x\\30=8x-5x\\30=3x\\3x=30$

Dividing both sides by 3

$\frac{3x}{3}=\frac{30}{3}\\x=10$

After 10 weeks, the boys will have same amount in savings.

Keywords: functions, division

Learn more about functions at:

#LearnwithBrainly

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