B1 xét dấu nhị thức
F(x)=2x+7
F(x)= -3x+5
F(x)=9x-8
F(x)=10x+7
B2giải

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Angie has saved 3/8 of the amount she needs to buy a bike. clive has saved 7/10 of the amount he needs to buy a skateboard. what is the difference between clive's and angie's fraction of savings?