Answer:
x=2
Step-by-step explanation:
16 is half of 32 so it would only be reasonable that x=2 so when you multiply 16x2 you get 32.
Hope this helps :)
<span> It would depend on the number of rows?
This is an arithmetic sequence and the sum of n terms is -->
n/2(2a+(n-1)d), where a is the first term and d is the common
difference. In this case a = 10, d =6
n/2(20+6(n-1)) = 3n^2 + 7n = ANSWER
n = number of rows
</span>
841 jumping jacks per 4 minutes

Divide both sides by 4.

Delilah can do 210.25 (or 210) jumping jacks per minute.
Answer:
x = 4, y = 4 or you can say (4, 4)