Sonji has $5.25 in nickels and dimes.The coin value can be modeled by the equation 0.10d + 0.05n = 5.25, where d represents the number of dimes and n represents the number of nickels. If Sonji has 21 dimes, how many nickels does she have?

35
42
63
105

Question

Sonji has $5.25 in nickels and dimes.The coin value can be modeled by the equation 0.10d + 0.05n = 5.25, where d represents the number of dimes and n represents the number of nickels. If Sonji has 21 dimes, how many nickels does she have? 

35
42
63
105

anonymous · Answer

@10115658 Sorry for bugging you >.<

anonymous · Answer

replace d with 21 and solve for n

anonymous · Answer

n=63?

anonymous · Answer

good job

anonymous · Answer

Can you help with me with another? Lol

anonymous · Answer

sure

anonymous · Answer

A sequence is defined by the recursive function f(n + 1) = 1/3f(n). If f(3) = 9 , what is f(1) ?

anonymous · Answer

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