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azamat
3 years ago
8

F(x)= -3x+7 what is f(-20)?

Mathematics
1 answer:
TEA [102]3 years ago
6 0

Answer:

67

Step-by-step explanation:

Evaluate 7 - 3 x where x = -20:

7 - 3 x = -3 (-20) + 7

Hint: | Multiply -3 and -20 together.

-3 (-20) = 60:

60 + 7

Hint: | Evaluate 60 + 7.

60 + 7 = 67:

Answer: 67

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9. A car dealership offers a loan with 4% interest for 48 months, and you plan to purchase a car for $20,000. You can afford a d
Lady bird [3.3K]

SOLUTION

Since you can afford a down payment of $2,500, the remaining money needed to purchase the car becomes

\begin{gathered} 20,000-2,500 \\ =17,500 \end{gathered}

Now, we will find the simple interest on $17,500 for 48 months, which is 4 years. This becomes

\begin{gathered} I=\frac{PRT}{100} \\ I=\frac{17,500\times4\times4}{100} \\ I=2,800\text{ dollars } \end{gathered}

(a) What will your monthly payment be? $

We will add this interest to the $17,500 and divide by 48 months to get the monthly payment. This becomes

\begin{gathered} 17,500+2,800=20,300 \\ \frac{20,300}{48}=422.91666 \\ =422.92 \end{gathered}

Hence, the answer is $422.92

(b) How much will you pay in total for the car? $

To get this, we add the $20,300 (that we divided by 48 months), to the initial down payment made. This becomes

\begin{gathered} 20,300+2500 \\ =22,800 \end{gathered}

Hence, the answer is $22,800

(c) How much will you pay in interest over the life of the loan? $

We have initially found the interest as 2,800 dollars.

Hence the answer is $2,800

4 0
1 year ago
n oblong box has a volume equal to lwh, where l is the length, w is the width, and h is the height. If the volume is 24 cubic fe
Eddi Din [679]
For this case the volume of the box is given by:
 V = l * w * h
 Where,
 V = 24 feet ^ 3
 Substituting values we have:
 24 = l * w * h
 Clearing the value of h we have:
 h = 24 / (l * w)
 Answer:
 
The height in terms of the other sides is:
 
h = 24 / (l * w)
8 0
3 years ago
Find the value of y if given: 20y-2, 17y +3, 5x + 8, 21x
rodikova [14]
<span>20y-2=
20y=2
20y/20=2/20
y=0.1

</span>17y +3<span>=
</span><span>17y=-3
17y/17=-3/17
y=-0.176

</span>
7 0
3 years ago
On his first three tests, Hiram got scores of 89, 95, and 90. His final test score brought his median score to 91.5. What was I
Elena-2011 [213]
The median is the middle score, it is also the average of the two middle scores when total number is even.

original 3 scores:  89, 90, 95  ----> median = 90

with final score:  89,90,X,95  ----> median = 91.5

(90+x)/2 = 91.5
90+x = 183
x = 93

Final score was a 93.
6 0
3 years ago
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