For his long distance phone service, Keith pays a $3 monthly fee plus 11 cents per minute. Last month, Keith's long distance bill was $16.42. For how many minutes was Keith billed?

122 Minutes

Step-by-step explanation:

Start with $16.42

subtract $3 for the monthly fee, 16.42-3= $13.42

he pays $0.11 per minute so that's 13.42 x (1min/0.11) = 122minutes

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube