A spherical lune is the region between two great circles of a sphere. Find the formula for the area of a lune if θ is in radians.

The total number of photos on hannah’s camera is a linear function of how long she was in rome. she already had 44 photos on her camera when she arrived. then she took 24 photos each day for 6 days. what is the rate of change of the linear function that represents this

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.