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alukav5142 [94]
3 years ago
12

Andrea and Elena are you saving money Andrea starts at $100 in a savings account and add five dollars per week I wanna start wit

h $10 in her savings account in at 20 each week after four weeks who has more money in the savings account
Mathematics
1 answer:
alex41 [277]3 years ago
4 0

Answer: Andrea

Step-by-step explanation: Andrea's total: $120, Elena's total: $100

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F(x) = -4x2 – 7x + 4<br> Find f(-7)
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Answer:

<h2> f(-7) = 249 </h2>

Step-by-step explanation:

f(x)  =  - 4 {x}^{2}  - 7x + 4

To find f(-7) , substitute the value of x that's - 7 into f(x). That is for every x in f(x) replace it with - 7

We have

f( - 7) =  - 4 ({ - 7})^{2}  - 7( -7 ) + 4 \\  = 4(49) + 49 + 4 \\  = 196 + 53 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>f( -7) = 249</h3>

Hope this helps you

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