Answer:
n = 1.125
Step-by-step explanation:

(Use Cross Product)
40n = 15 × 3
40n = 45
n = 1.125
I can't tell what the numbers are on the first one but you got the second one right, and the last one would be different it would be 24 I believe.
9 because the square root of 81 is 9
Answer:
t = 12
Step-by-step explanation:
<em>252 divded by 21 =</em>
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C. $360
$224x4=896 (total profit)
$896 (total) - $536 (first month profit) = $360 (second month profit)