Answer:
option 3
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
Since we know x = 2 and z = 3x, let's find z by substituting the value for x into z:
z = 3(2) = 6
Now that we have the values of both x and z, we can substitute them into the expression and simplify:
x + 4z - 5 - 3x
= 2 + 4(6) - 5 - 3(2)
= 2 + 24 - 5 - 6
= 15
Let x = number of hours required to fix the computer
$230 = $25x + $155
To solve for x, subtract $155 from both sides.
$75 = $25x
Divide each side by $25
3 = x
It took 3 hours to fix the computer
