Answer:
6
Step-by-step explanation:
The absolute value function always returns a positive value, that is
| a | = | - a | = a
Given
b(x) = | x + 4 | , then
b(- 10) = | - 10 + 4 | = | - 6 | = 6
The answer is $320.
In order to solve this, you can start off by turning this word problem into an expression.
$70x → $70 per hour (x represents the amount of hours)
+40 → plus $40 for the call
Substitute the x for 4 and solve the equation.
70x+40
70(4)+40
280+40
320
The plumber charges $320 for 4 hours of work.
If the price is $400 before then you multiply it by .85 to take off the 15% and make it $340 plus tax makes it $374
Answer:
D.
Step-by-step explanation:
Momentum(p) is Mass(m) times Velocity(v) or p = mv
The results of the calculations are attached. 0.4 kg at 2 m/s has the most momentum: 0.8 kg*m/s