Question

Susan wants to save $800 to buy a TV. She saves $19 each week. The amount, A (in dollars), that she still needs after w weeks is given by the followin

function
A(W) = 800 - 19w
Answer the following questions.
(a) How much money does Susan still need after 5 weeks?
(b) If Susan still needs $439, how many weeks has she been saving?
I weeks
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Explanation
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Answer 1

Answer:A: $705

B: 19 weeks

Explanation:

Calculator

Answer 2

705 and19 weeks

Explanation:

Amount that Susan want to save = 800$

Savings per week = 19$

The amount, A (in dollars), that she still needs after w weeks is given by the following function

`A(W) = 800 - 19w`, where w represents the number of weeks

a) After 5 weeks money
`A(5) = 800-19(5)\\=705`$

b)
`A(w) =439\\800-19w=439\\19w=800-439 =361\\w =19`