Jenna buys 12 lb of meat. some of the meat is chicken and costs $1.90/lb. the rest is beef, which costs $4.30/lb. she spends a total of $34.80. which equation models this situation? let c represent the number of pounds of chicken she buys. a. (1.9 + 4.3)(12 – c) = 34.8 b. 4.3c + 1.9(c + 14) = 34.8 c. 4.3c + 1.9(12) = 34.8 d. 1.9c + 4.3(12 - c) = 34.8