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Q: Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worke...

A: Let the first mechanic charged $x per hour. And the second mechanic charged $y per hour. Given that ...

Q: Given the function f(x) vx-7, (a) Find f (b) Graph f andf in the same rectangular coordinate system....

A: (a)It is given that the function f(x) = √(x – 7).Obtain the inverse of the function as follows.Subst...

Q: solve the system x-y+z=-1 x+y-2z=7 -2x+4y+2z=-4 x= y= z=

A: To solve the systemx-y+z=-1x+y-2z=7-2x-+4y+2z=-4The system of equations are,

Q: List all values of x for which the rational expression is undefined 12/-3x

A: To calculate the all possible value of x for which the rational expression 12/(-3x) undefined. Now, ...

Q: Factor the algebraic expression 4/10 1/10 X - X

A: Given algebraic expression is,x4/10-x1/10

Q: A car is purchased for $31,000 . Each year it loses 30% of its value. After how many years will the ...

A: Let the depreciated amount be represented by D(t). then according to the given condition.

Q: x2-5x+6=0. find the value of x

A: Obtain the value of x as follows.

Q: how do i find the domain of this rational function f(x)=2x/(2x+7)

A: We are given function as

Q: Solve the compound inequality. -3v 6 2v-4 4 or Write the solution in interval notation If there is n...

A: The compounded inequality is given by,