Ori needed at least $1.47 in postage to mail an envelope to his cousin overseas. If x represents the number of $0.44 cent stamps he has and y represents the number of $0.10 cent stamps he has, the inequality representing the number of stamps he can use to mail the envelope is 0.44x + 0.10y ≥ 1.47. If Ori uses all 3 of the $0.44 cent stamps he has, what is the minimum number of $0.10 stamps he needs to use?

Question

Mathematics

Maverick Luna

29 May, 12:00

Ori needed at least $1.47 in postage to mail an envelope to his cousin overseas. If x represents the number of $0.44 cent stamps he has and y represents the number of $0.10 cent stamps he has, the inequality representing the number of stamps he can use to mail the envelope is 0.44x + 0.10y ≥ 1.47. If Ori uses all 3 of the $0.44 cent stamps he has, what is the minimum number of $0.10 stamps he needs to use?

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Briley Galloway · Answer 1

Based on the inequality, 0.44x + 0.10y ≥ 1.47, substitute 3 to x and solve for the value of y which represents the number of $0.10 stamps. Dropping the inequality sign and replacing it with equal sign, we get an answer for y equal to 1.5. Since there are no have stamps, we use 2 stamps. Thus, Ori needs a minimum of 2 $0.10 stamps.