Please solve both with the right answer
Find the rate of change of total profit, in dollars, with respect to time where R(x)=90x−0.5x2 and C(x)=30x+9, when x=48 and dtdx=30.
Find the rate of change of total profit, in dollars, with respect to time where R(x)=4x and C(x)=0.02x2+0.2x+70, when x=24 and dtdx=5.
Find the rate of change of total profit, in dollars, with respect to time where R(x)=90x−0.5x2 and C(x)=30x+9, when x=48
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Find the rate of change of total profit, in dollars, with respect to time where R(x)=90x−0.5x2 and C(x)=30x+9, when x=48
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