if y is the sum of 3x and 5 more than x ,by what number does y ex_英语解答

if y is the sum of 3x and 5 more than x ,by what number does y exceed
A 2
B 3
C4
D5
E can not be determined

人气：160 ℃　时间：2019-12-22 22:41:36

解答

如果y为3x和5且大于x,那么当y为何值时y大于x
即：
∵ y=3x+5
∴ 3x+5 > x
解得 x > -2.5
为E老实说这题目感觉不太对劲，虽然说不出来