Naomi buys last year's best-selling novel, in hardcover, for $12.35. this is with a 35% discount from the original price.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

the answer is a if my teacher taught me correct

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734