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dolphi86 [110]
3 years ago
9

Shelly has a gift card for her favorite restaurant for $15. She wants to treat a group of her friends to sandwiches at the resta

urant. Sandwiches cost $4.50 each. Write an equation that models the total money Shelly owes if she buys x sandwiches after using the gift card.
Mathematics
2 answers:
Firlakuza [10]3 years ago
7 0

Answer:

Amount owed = 4.5x - 15

Step-by-step explanation:

x sandwiches will cost:

$4.50x

She has $15

She has to pay:

$(4.5x - 15) more

Jlenok [28]3 years ago
4 0

Step-by-step explanation:

the money that Shelly will owe after buying x sandwiches and using the card will be:

if x < 4 then 15 - 4.5x <= 15 - 3*4.5 = 1.5 she will not owe anything plus she will receive change of $1.5.

if x=> 4 then 4.5x - 15 => 18 - 15 = 3 that is Shelly will owe 4.5x - 15 dollars.

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1) 9.1 = -0.2x + 10         | - 10

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