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Abeer wants to save $800 to buy a TV. She saves S17 each week. The amount, A (in dollars), that she still needs after w weeks is given by the following
function
A (w) - 800 - 17
Answer the following questions.
(a) If Abeer still needs s511, how many weeks has she been saving?
I weeks
(b) How much money does Abeer still need after 6 weeks?

Respuesta :

If Abeer still needs $511, it means that he had been saving for 17 weeks.

The amount, A that she still needs after w weeks is given by the function A = 800 - 17w

Therefore, if Abeer still needs $511, the number of weeks that she has been saving will be calculated thus:

A = 800 - 17w

511 = 800 - 17w

Collect like terms

17w = 800 - 511

17w = 289

w = 289/17

w = 17

Therefore, she has been saving for 17 weeks.

The amount of money that Abeer still need after 6 weeks will be:

A = 800 - 17w

A = 800 - 17(6)

A = 800 - 102

A = 698

She still needs $698 after 6 weeks.

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