Answer:
Given the statement: if y =3x+6.
Find the minimum value of 
Let f(x) = 
Substitute the value of y ;

Distribute the terms;

The derivative value of f(x) with respect to x.

Using 
we have;

Set 
then;


By zero product property;
and 2x + 3 = 0
⇒ x=0 and x = 
then;
at x = 0
f(0) = 0
and
x = -1.5

Hence the minimum value of
is, -5.0625
Answer:

Step-by-step explanation:
we know that
To find the ratio of yellow to red marbles, divide the numbers of yellow marbles by the number of red marbles
Let
x-----> the numbers of yellow marbles
y----> he number of red marbles
we have

so

(21 + 34 + x + 25 + 37 + 22) / 6 = 30
(139 + x) / 6 = 30 .....multiply both sides by 6
139 + x = 30 * 6
139 + x = 180
x = 180 - 139
x = 41......so during week 3, she rode her bike 41 miles
Answer:
the second one
Step-by-step explanation:
2 halves make a whole. 1/2 + 1/2
4 fourths make a whole. 1/4 + 1/4 + 1/4 + 1/4
a half of a fourth is an eighth. 1/4 ÷ 1/2 = 1/8
Answer:
B, 20mph
Step-by-step explanation:
540 miles in 27 hours is 540/27 = 20 miles in 1 hour. This is 20 mph