Emily is entering a bicycle race for charity. Her mother pledges $0.20 for every 0.75 miles she bikes. If Emily bikes 15 miles, how much will her mother donate? plz help :D

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?