If x is equal to the sum of the even integers from 40 to 60, inclusive, and y is the number of even integers from 40 to 60, inclusive, what is the value of x + y ?
550
551
560
561
572
登录 或 注册 后可以参加讨论
x=550 y=11
x=550
y=11
登录 或 注册 后可以参加讨论