Answer:
x=1/2,-2/3
Step-by-step explanation:
A number is prime if its only divisors are 1 and the number itself.
Out of your numbers, 36 and 38 are even, and thus divisible by 2, so they aren't prime.
Similarly, 35 ends with 5, so it's divisible by 5, and is not prime.
37 is divisible only by 1 and 37, and thus it's prime.
I dont completely know but it might be 3
10 20 30 40 50
15 30 45 55 70
20 40 60 80 100
24 48 72 96 120
It took her 4 hours.
Since she travels 50 miles in just one hour, in four hours she could drive 200 miles. :)