Answer:
where in the heck is the x tho
where is x in the equation I am hella confused and I don't understand how to help
The answer for that is A. 40 cubic in
H'(x) = 2f'(x)
h'(1) = 2*f'(1) = 2*4
h'(1) = 8
<span>F=father's weight
.
0.5F+10kg=48kg
0.5F=38kg
F=76kg
ANSWER: His father's weight is 76 kg.</span>
The total cost when 881 minutes is used is $477.50.
<h3>What are the equation that model the question?</h3>
a + 480b = 277 equation 1
a + 990b = 532 equation 2
Where:
- a = flat fee
- b = variable fee
<h3>What is the flat fee and the variable fee?</h3>
Subtract equation 1 from equation 2
510b = 255
b = 255 / 510
b = $0.50
In order to determine the flat fee, substitute for b in equation 1
a + 480(0.5) = 277
a + 240 = 277
a = 277 - 240
a = $37
<h3>What is the total cost when 881 minutes is used?</h3>
Total cost = flat fee + (variable cost x number of minutes spoken)
$37 + (881 x 0.5) = $477.50
To learn more about simultaneous equations, please check: brainly.com/question/25875552
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