Answer:
x
Step-by-step explanation:
If you added x to the equation, then it would become x²+4x+9=0, which is a perfect quadratic square
Answer:
x = 1/5(k-14)
Step-by-step explanation:
5x + 14 = k
Subtract 14 from each side
5x+14-14 = k-14
5x = k-14
Divide by 5
5x/5 = 1/5(k-14)
x = 1/5(k-14)
Answer:
a. Letting m represent the number of additional miles driven, we have .35m.
b. Devon paid $43 for additional mileage.
Step-by-step explanation:
For part b: $421 - ($54 × 7)
= $421 - $378 = $43