The roof of Kamden's house is shaped like a parallelogram. The base of the roof is 13 m and the area is 110.5 m². what is the height

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

10% of 1,900,000. show me how you got the answer

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?