D 198 cubic inches
15. When filled, a particular round balloon has a diameter of 14 inches (in.).
What is the approximate volume of air needed to fill this balloon?
A
1,078 in.
B.
1.437 in.
C. 8.621 in.
D. 11,494 in.

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.