Rachel is going on vacation. She is trying to figure out how much money to bring along. She plans to spend $120 on hotels, $45 o
2 answers:
Answer:
Rachel should bring along $320.
Step-by-step explanation:
Rachel plans to spend $120 on hotels, $45 on gas for her car, and $65 on food.
She is also going to go to an amusement park twice. Tickets to the amusement park cost $30 per day.
So, total amount becomes:
dollars
Now, she wants to have $30 left in her wallet after the trip is over.
So, in total she must bring along dollars.
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Logarithm properties:
According to this, we can get:
According to this, we can get:
Answer:
• x = -4, x = 0, x = 1
Step-by-step explanation:
x is a factor of all terms, so x=0 is a zero. (Eliminates choices 1 and 5.)
The sum of coefficients is 0, so x=1 is a zero. (Eliminates choices 3 and 4.)
Reversing the sign of the odd-degree terms gives signs of -++, so there is one sign change, hence one negative real root (by Descartes' rule of signs). This confirms choice 2 as the answer.
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Of course, your graphing calculator can answer this almost as quickly.
