Answer: 3 good luck
Step-by-step explanation:
U mean y = 0.9^x ...?
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its exponential decay...
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because.. y = (1/e)^x is exponential decay...
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(1/e) < 1
Answer:
He spent 144.42 and he got back 55.58
Step-by-step explanation:
X = -6 + y...so we sub in -6 + y for x in the other equation
x - 3y = 28
-6 + y - 3y = 28
-2y - 6 = 28
-2y = 28 + 6
-2y = 34
y = -34/2
y = - 17
x = -6 + y
x = -6 - 17
x = - 23
solution is (-23,-17)