Ken hikes a trail at a constant rate of 4/5 of a mile every 2/5 of an hour. He stops for a 3/4 hour lunch. He wants to hike at least 20 miles. What is the minimum account of time ken will be on the trail.

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?