*asap* 7 + r = 15 a. 22 b. 8 c. 105 d. 9 138 = n + 38 a. 100 b. 200 c. 250 d. 150 9 = w  – 14 a. 24 b. 126 c. 5 d. 23 6.3 = 0.7x a. 8 b. 18 c. 7 d. 9 identify an equation that models the situation and find its solution. it’s going to be lindsay’s birthday soon, and her friends mary, jacqui, tadeusz, opal, and tony have contributed equal amounts of money to buy her a present. they have $45.00 to spend between them. determine how much each contributed. a. 5y = 45.00; y = $9.00 b. 5y = 45.00; y = $10.00 c. 5 + y = 45.00; y = $39.00 d. 5 + y = 45.00; y = $40.00 note: remember to show all of the steps that you use to solve the problem. be sure to use the text box where the question mark first appears to show your mathematical work. you can use the comments field to explain your work. r + 354 = 1,321 (my answer- 967) d – 21.4 = 87.9 (109.3) 5 × g = 230 ( 46 ) z ÷ 12 = 9 ( 108