From 1992 through 2007, the purchasing power of a dollar decreased by about 3.5% per a year. using 1992, as the base for comparison, what was the purchasing power of a dollar in 2007? formula: y=c(1−r)t $0.48 $0.57 $0.44 $0,59

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

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

Tell whether the two rates form a proportion