Answer:
28-24x
Step-by-step explanation:
4(7-6x)= 28-24x
choices:
28-6x
-24x+28
-24x+28
28-24x
Answer:
The domain that makes sense for this function is all values greater than or equal to 0.
Step-by-step explanation:
A ball is thrown into the air from a height of 4 feet at time <em>t</em> = 0. It is modeled by the function:

The domain of the function is time <em>t</em>. The range of the function is the ball's height in the air <em>h</em>.
Since time is our domain, we must restrict our domain to values equal to or greater than 0 since time cannot be negative.
Therefore, the domain that makes sense for this function is all values greater than or equal to 0.
In interval notation, this is:

And as an inequality:

The value of the x if e3*6 - 87 equals e3x - 81
Answer:
12.7
Step-by-step explanation:
Use the Pythagorean Theorem.
The wall and ground are the legs. The ladder is the hypotenuse.
a² + b² = c²
8² + b² = 15²
b² = 225 - 64
b² = 161
b = √161 = 12.7
Answer: 12.7 ft
Long way is to plug in 0 for the x, which ends up being y=b
most people take a shortcut and call b the y-intercept when it's y=mx+b form