Question

Please help! -Screenshot-

Answer 1

A = 40 + .1(M-500) for M>500

B = 25 + .05M

20 minutes a day for 30 days = 600 minutes per month

A(600) = 40+.1(100) = $50

B(600) = 25 + .05(100) = $30

Plan B is less expensive

40+.1(M-500)= 25+.05M

40-25- .1(500) = .05-.1M

.05M = 35
M= 35/.05 = 700 minutes will have the same cost under plan A or B

40+.1(200) = $60 under plan A
25+.05(700) = $60 under plan B

Answer 2

|-1| < |-2|

Explanation:

When the bars are on either side of the number, it takes the negative away. So |-1| < |-2| is the same as 1 < 2.

I really hope this helps!