21) Martha's aunt bought $26 for 20 plants. Some were Carnations selling at 4 for $3.00. The rest were Zinnias priced at
3 for $5.00. How many plants of each type did she buy?

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*