Write the following expression as a function of a positive acute angle. tan 245 a. tan65°
b. -tan65°
c. tan115°

ik its not b bc I got it incorrect so it is either a or c but I'm not sure please help

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

The graph shows the prices of different numbers of bushels of corn at a store in the current year. the table shows the prices of different numbers of bushels of corn at the same store in the previous year. previous year number of bushels price of corn (dollars) 2 10 4 20 6 30 8 40 part a: describe in words how you can find the rate of change of a bushel of corn in the current year, and find the value. part b: how many dollars more is the price of a bushel of corn in the current year than the price of a bushel of corn in the previous year? show your work.

Which matrix multiplication is possible?