About what percent of the total area of Hal's
backyard is the area taken up by the patio,
walkway, and garden? Round to the nearest
whole percent. The patio is 40ft the lawn is 24ft the walkway is 24ft the other lawn is 30ft and the garden is 18ft.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

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