Answer:
x + y = 30 and x - y = 6
Step-by-step explanation:
let the 2 numbers be x and y , x > y , then
x + y = 30 ← sum of the 2 numbers
x - y = 6 ← difference of the 2 numbers
6
divide
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I'm pretty sure it would be C
because 0.17 is how much he has to pay for each message sent and if x is the total messages he sends then it should be 0.17X+24.07
√27 x √12 x √9
= √2916
=54