At this rate, Brian plans 10/162 of his shirt.
The speed for which Brian iron the shirts is given by

Cross multiply to get

Multiply both sides by 5/18 to solve for x.

At this rate, Brian plans 10/162 of his shirt.
learn more Cross multiply :brainly.in/question/34341065
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__________this took me like 3 mins to make
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To figure out you would first find a common factor with would be 12. After that 1/4 would be 3/12, 1/3 would be 4/12 and 1/6 would be 2/12. Next you just add all the numbers and get 9/12 then the remainder is you answer which comes to be 3/12 or 1/4. Hope that helps:)
f(x) = 3/(x + 2) - √x - 3
f(7) = 3/(7 + 2) - √7 - 3
f(7) = 3/9 - √4
f(7) = 0.333 - 2
f(7) = -1.67