若b<0,则二次函数y=x2+bx-1的图象的顶点在 ( )
A:第一象限
B:第二象限
C:第三象限
D:第四象限
Write a letter to your penfriend about how ____ (deal) with these problems.
If Daisy has only 55 yuan, she can enjoy the activity in _____ on June 28th.