The estimated total cost, y, of a child’s toy is partially based on the number of batteries used, x. The cost of one battery is $0. 75. The toy itself costs $12. Which equation represents the situation? y = 12x + 0. 75 y = 0. 75x + 12 y = 12x – 0. 75 y = 0. 75x – 12.

Adult wasps sting caterpillars and inject their eggs into the caterpillars. the larvae feed on the caterpillars, leading to the death of the caterpillars. what kind of a relationship exists between the wasps and the caterpillars? a. the adult wasps are parasites to the caterpillars. b. the caterpillars are parasites to the wasps. c. the adult wasps are commensals, and the caterpillars are hosts. d. the caterpillars are commensals, and the adult wasps are hosts.