For the value of x = 10, then the value of function f [g(10)] is 198. Then the correct option is D.
<h3>What is a function?</h3>
The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.
The following functions f(x) and g(x), solve f [g(10)]. f(x) = 10x + 8 g(x) = x + 9.
put g(x) in place of x in the function f(x). Then we have
f [g(x)] = 10(x + 9) + 8
f [g(x)] = 10x + 90 + 8
f [g(x)] = 10x + 98
Put x = 10, then we have
f [g(10)] = 10(10) + 98
f [g(10)] = 100 + 98
f [g(10)] = 198
Thus, for the value of x = 10, then the value of function f [g(10)] is 198. Then the correct option is D.
More about the function link is given below.
brainly.com/question/5245372
Answer:
66 coolers
Step-by-step explanation:
C = 0.005x² - 0.3x + 17
When C = $19
19 = 0.005x² - 0.3x + 17
19 - 17 = 0.005x² - 0.3x
2 = 0.005x² - 0.3x
0.005x² - 0.3x - 2 = 0
x = -b ± √b² - 4ac / 2a
= -(-0.3) ± √-0.3² - 4*0.005*-2 / 2*0.005
= 0.3 ± √ 0.09 - (-0.04) / 0.01
= 0.3 ± √ 0.09 + 0.04 / 0.01
= 0.3 ± √ 0.13 / 0.01
= 0.3/0.01 ± √0.13/0.01
= 30 ± 0.36/0.01
x = 30 ± 36
x = 30 + 36 or 30 - 36
x = 66 or -6
Number of coolers can not be negative
Therefore, number of coolers produced when the cost is $19
is 66 coolers
Answer:
4
Step-by-step explanation:
10 * 40%
10 * 0.4 = 4