Answer:
145.88
Step-by-step explanation:
17&13 father will 17 and son will be 13
10/(9y)
multiply y by 9: 9y
then divide 10 by the result: 10/(9y)
Answer: 2.2214
0.07 x 39.98 = 2.7986 (is tax)
2.7986 + 39.98 = 42.7786
45.00 - 42.7786 = 2.2214