Diane needs 165 pieces of candy to hand out to guests at a party she is hosting. each bag of candy contains 20 pieces. she has 25 pieces left over from a previous party. she calculates she needs to purchase 7 additional bags of candy to meet the 165 piece of candy requirement. which of the equations below verifies that she needs 7 additional bags of candy? a. 20 * 7 + 25 = 165 b. 25 + 7 * x = 165 c. 25 * 7 + 20 = 165 d. 25 * x + 7 = 165