Abby, bik, cari, dawn, and ellen collect t-shirts. abby has the most. bik has 2.5 times as many t-shirts as cari. dawn has 1/3 as many t-shirts as cari. together, abby, bik, cari, and dawn have 120 t-shirts. ellen noticed that she has double the number dawn has, plus 1. if ellen has 13 t-shirts, how many does abby have?

show work

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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i believe the answer is the polygon, heptagon.