in 1965 the federal debt of the United States was $322.3 billion. During the next 30 years, the debt increased by about 10.2% each year. a) write an equation to model the amount D (in billions of dollars) of the debt t years after 1965. b) what was the federal debt in 1980?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?