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Mkey [24]
3 years ago
14

Consider the function f(x) = x2 + 3x − 7. Find the value of f(x) when x = 3 and select the correct answer below. 5 8 11 18

Mathematics
2 answers:
kenny6666 [7]3 years ago
6 0
F(x)=x^2+3x-7, x=3

f(3)=3^2+3(3)-7

f(3)=9+9-7

f(3)=11
MAVERICK [17]3 years ago
4 0
F(x) = x^2 + 3x - 7 x = 3
(3)^2 + 3(3) - 7
9 + 9 - 7
18 - 7
f(3) = 11
You might be interested in
Ajax is 5 and 1 fourth feet tall. His sister is 3 eighths foot shorter than Ajax How tall is Ajax Sister?
user100 [1]

Answer:

4\frac{3}{4} feet tall

Step-by-step explanation:

Ajax is "5 and 1 fourth feet tall", which can be written as the mixed number 5\frac{1}{4} .

His sister is "3 eighths foot shorter", so she's 3/8 feet shorter than 5 1/4.

So, this is just a subtraction problem:

5\frac{1}{4} -\frac{3}{8}

To solve this, we want to convert 5 1/4 into an improper fraction, which is: \frac{21}{4} . Now, we want to find a common denominator. In this case, that common denominator is 8, so \frac{21}{4} =\frac{42}{8} .

Finally, we subtract 3/8 from 42/8: \frac{42}{8} -\frac{3}{8} =\frac{39}{8} . So, Ajax's sister is 39/8 feet. Converting this into a mixed number, we have: 39/8 = 4\frac{6}{8} =4\frac{3}{4} .

Therefore, Ajax's sister is 4\frac{3}{4} feet tall.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Please help me out on this :(( struggling !
Yuki888 [10]

Answer:

answer is B

Step-by-step explanation:

step by step explanation

3 0
3 years ago
What is 4725 devided by 30
lana [24]
4725 devided by 30 is 4725 / 30 = 157.5 ;

6 0
3 years ago
What fraction greater than one can you write 4 3/5?
mina [271]
You just change the mixed number into an improper fraction.
4 3/5
5x4=20
20+3=23
23/5
3 0
3 years ago
Read 2 more answers
Consider the following piecewise-defined function.
Fittoniya [83]
In order to solve this, we need to select the function that meets our constraints. Since x^2 - 5 occurs when x is less than 3, and the x-value we are given is -4, we use the first function.

f(-4) = (-4)^2 - 5
f(-4) = 16 - 5
f(-4) = 11
7 0
3 years ago
Read 2 more answers
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