Question

Lola purchases music from two online services. Company A charges Lola a $10

subscription fee plus 89 cents for each song. Company B charges no subscription fee but
$1.19 per song. What is the minimum number of songs Lola would have to purchase for
Company A to be the cheaper option?

Answer 1

9514 1404 393

Answer:

8. (c) 34

9. 38 women

Explanation:

8. The price for s songs is ...

A = 10 +0.89s

B = 1.19s

We want A < B, so ...

10 +0.89s < 1.19s

10 < 0.30s

33.33... < s

Lola would have to purchase 34 songs for Company A to be the cheaper option.

__

9. Let m represent the number of men. Then the number of women (w) is ...

w = 4m+2

The total of men and women is 47, so we have ...

m + w = 47

m + (4m +2) = 47

5m = 45 . . . . . . . . . subtract 2

m = 9 . . . . . . . . . . . .divide by 5

4m +2 = 4(9) +2 = 38 . . . . find the number of women

The PTA has 38 women in it.