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Lemur [1.5K]
3 years ago
7

Prudie needs $90 or more to be able to take her family out to dinner. she already saved $30 and wants to taker her family out to

dinner in 4 days. suppose that prudie earns the same each day. write an inequality to find how much she needs to earn each day. suppose that prudie earns $18 each day. will she have enough money to take her family to dinner in 4 days? explain.
Mathematics
2 answers:
Nina [5.8K]3 years ago
6 0
90≤4x+30

Yes she will have enough. 4 multiplied by 18 is 72. 72+30=102. 

Hope this helped.
Semenov [28]3 years ago
5 0

Answer:

4A + 30 ≥ 90

She will have enough money to take her family to dinner in 4 days.

Step-by-step explanation:

Be

A = Daily gain

B = Money saved = $30

C = Missing days to take the family to dinner = 4 days

D = money needed ≥ $90

The equation would be,

C * A + B ≥ D

4 * A + 30 ≥ 90

4A + 30 ≥ 90

If you earn $18 every day (A = $18), that value is substituted in the inequality, so it is resolved:

4(18) + 30 ≥ 90

72 + 30 ≥ 90

102 ≥ 90

Since the inequality is met, then she will have enough money to take her family to dinner in 4 days.

Hope this helps!

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