Answer:
113.04
Step-by-step explanation:
the equation for the area of a circle is pie times radius squared
The scenario will will be represented by: 
The number will be -13
Step-by-step explanation:
We have to convert the given situation into the mathematical form
Let x be the number
Then
"a number plus itself"
x+x
"plus twice itself"
x+x+2x
"plus 4 times itself"
x+x+2x+4x
"is equal to -104"

This can also be written as:

Keywords: Linear Equation
Learn more about linear equation at:
#LearnwithBrainly
f(x)=10x to the power of two +4
So basically you would create an equation from y=mx+b, so you would put 40 in for m and to find x you convert 1.2 hours into minutes which is 72 minutes. so multiply 40 times 72 and that’s how far Jack will be i believe. Jack jogged 2,880m/min. Hope it’s correct.
Answer:
18
Step-by-step explanation:
3.25 + 1.25 = 4.5
81 / 4.5 = 18