In south australia, an average of 16 400 000 packets of chips were eaten each day. after a campaign by the health department this amount reduced by 3.9 million. how many packets of crisps were eaten after the campaign?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

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.

Ben frank is an electrician who installs lighting fixtures. he charges (in dollars) his clients 15h+40f15h+40f where hh is the number of hours worked and ff is the number of fixtures installed. how much does ben frank charge when he works 77 hours and installs 99 fixtures?