Carlos had 28 baseball cards. the cards came in packs of 4. carlos gave his friend 3 packs of cards. write an equation using c for the number of baseball cards left. solve to find how many baseball cards carlos has left.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?