The ATT low-use plane for Internet and email costs $15 for the first 200 MB (megabytes) plus $0.10 for each additional MB. Use your Graph to estimate the cost of these usages: 40 MB, 195 MB, 270 MB.
A) $16$ , $16$ , $2$
B) $14$ , $14$ , $21$
C) $15$ , $15$ , $22$
D) $17$ , $14$ , $24$
E) $13$ , $16$ , $20$

Question

Quizplus · Accepted Answer

For 40 MB: Cost = $15 (first 200 MB) + $0.10x(40-0) = $15 + $4 = $19
For 195 MB: Cost = $15 (first 200 MB) + $0.10x(195-200) = $15 + $1.50 = $16.50
For 270 MB: Cost = $15 (first 200 MB) + $0.10x(270-200) = $15 + $7 = $22
The only choice that matches these costs is C.

The ATT Low-Use Plane for Internet and Email Costs $15 161616

The ATT Low-Use Plane for Internet and Email Costs $15 $16$