There are 48 students in a speech contest. Yesterday, 2/3 of them have their speeches. Today, 7/8 of the remaining students give their speeches. How many students still haven't given their speeches?

2 students

Step-by-step explanation:

Given that

There are 48 students out of which 2 by 3 have their speeches and the remaining of 7 by 8 give their speeches

We need to find the no of students who haven't given their speeches

So,

= 48 × 2 ÷ 3

= 32

Now

= (48 - 32) × 7 ÷ 8

= 14

So, the no of students still haven't given their speeches is

= 48 - 32 -14

= 2 students

 b. 0.0142

Step-by-step explanation:

We know that the growth rate (r) of credit balance with monthly interest 'i' % is given by :-

Now, the given statement : The monthly interest rate is 1.42%.

Then, the  growth rate of your credit card balance will be :-

Hence, the  growth rate of your credit card balance =0.0142.