Which equation can be used to determine what number, n, is 40% of 64?
a) (40) (64) = n
b) 40 / 64 = n
c) 0.40 (64) = n
d) 64n = 0.40

pretty sure 750 each month!

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

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