数学有个应用题看不懂
A certain money market account that had a balance of $48,000 during all of last month earned $360 in interest for the month. At what simple annual interest rate did the account earn interest last month?
主要最后一句我看不懂 还有 balance 是什么?这一年的所有余额吗
还有一个。。To obtain an FHA mortgage for $50,000 or more, the home buyer must have a down payment equal to 4 percent of thefirst$25,000 of the mortgage amount and 5 percent of the portion in excess of $25,000.At settlement the buyer pays a mortgage insurance premium equal to 3 percent of the mortgage amount.What is the maximum FHA mortgage amount, if any, a buyer can obtain if the buyer has only $6,000 available for the down payment and insurance premium?
模考第九套:For the line with equation y=ax+b, at不等于0,the x-intercept is twice the y-intercept.
the slope of the line 1/2
答案给的是D,我认为是B,截距不是有正负号吗?请教版主~发现前面同样有人问了这道题,可是没有人回答。。