Question

Help Me Plz A music producer is making a list of vocalists needed to record an album. For each day of recording, a different number of vocalists are needed. The first day, seven vocalists are needed. Each day after that, the number of vocalists needed doubles. The producer must pay by the day for each vocalist. To find the total price, the producer needs to know how many vocalists sang in total at the end of the 10th day. Use a series to find the sum after the 10th day. 7,168 7,161 3,584 3,577

Answer 1

7161

Explanation:

I took the test :)

Answer 2

7161

Explanation:

Now we need to find the sum for a series

The formula is

Sn = (first term)*(1 - r^n)/(1-r) where n is the number of days and r is the rate

= 7( 1 -2^10)/ (1-2)

= 7( -1023)/-1

= 7161