The number f of miles a ship is from its destination x hours after starting a voyage is given by f(x)=550−50x. The number f of miles a submarine is from its destination x hours after leaving port is shown in the graph below. State the distance and length of time of each voyage.

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed