<span>f '(x) = [(-40x +11)(7x - 9) - 7(-4x +3)(5x + 1)]/(7x - 9)2</span>
<span>= [(-280x2<span> + 360x + 77x - 99) - 7(-20x</span>2<span> - 4x + 15x + 3)]/(7x - 9)</span>2</span>
<span>= [(-280x2<span> + 437x - 99) + (140x</span>2<span> + 28x - 105x - 21)]/(7x - 9)</span>2</span>
<span>= (-140x2<span> +360x - 120)/(7x - 9)</span><span>2
</span></span>
i think thats how you would solve it
hope this helps tho:)
452 because you will multiply 80 by 6 and get 480 and subtract 28 from that!
Answer:
Step-by-step explanation:
si... yono em usho de cmopu preo sloo estoy usand una jjssjsjsj jsjsj c
C
For first 3 minutes keep 1.25
Then for rest do 0.15(x-3)
Now add to get total cost
Mark brainliest please
Answer:
paul will spend 33
Step-by-step explanation:
66-43
