Katie makes 70% of her shots from the free-throw line. can you determine how many consecutive free-throws she must make in order to increase your percentage to 75%? explain.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?