Ted has a fixed amount of money in his budget for holiday gifts. he decides that his wife and his mother will receive gifts of equal value. the gift for his sister will cost half of what his mother’s gift cost, and his brother’s gift will be equal to his sister’s. he will also spend $20 on a video game for his nephew. let t represent ted’s total budget and x represent the value of his sister’s gift. which of the following equations could ted use? a. t = 6x + 20 b. t = x + x + 2x + 20 c. t=x2+4x+20 d. t = 3x + 20