Great Buy sold a total of 80 CDs and sweaters on Tuesday. It sold 9 times as many CDs as sweaters. How many CDs were sold?

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.