Solve the system of equations. 13x−y=90
y=x^2−x−42
enter your answers in the boxes.

Long division the problem is 40 ➗ 348 = ?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?