What is the area of an equilateral triangle with a radius of 8

Given abcd ac=38 and ae=3x+4 find the value of x

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Find the midpoint m of z1=(8+5i) and z2=(12+3i)