What expression is a difference of squares with a factor of 2x+5
4x^2+10
4x^2-10
4x^2+25
4x^2-25

What is not true about kl and mn? what is mn? (show your work)

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?