The gardening club at school is growing vegetables. The club has 300 square feet of planting beds. Cucumber plants require 6 square feet of growing space, and tomato plants require 4 square feet of growing space. The students want to plant some of each type of plant and have at least 60 plants. Select all the equations or inequalities that could describe this situation. Let c represent the number of cucumber plants and t represent the number of tomato plants.