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The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.

Lucy spent $165 in december using a new credit card. in january, she began paying between $15 and $25 each month towards her account balance.

If ∠q = 44°, then m = 44°. true false