Answer:
mary=10 jack=15
Step-by-step explanation:
After 4 years Mary (x+4), Jack's age (x+5) + 4.
sum of the ages after 4 years :(x+4) + (x+5) +4=33
Simplifying the equation:
2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age
10 + 5 = 15 which is Jack's age.
There's no real need to rationalize the denominator in the second term, since

and this term is ready to be integrated via the power rule. Rationalizing doesn't really help here.
The answer would be 4.7979 because to find the answer you divide your percent by 100.
Hope this helped!!
N represent the number of rides each of them took
entrance fee for both of them = 2x
Total cost of rides = 2n x 3.50 = 7n
The total cost is 44
2x + 7n = 44 (Answer E)
2x + 7n = 44
2(x + 3.5n) = 44 (Answer C)
I think the answer would be 16 and 13