At a coin collector shop, a rare us coin was recently marked up 50% and is now selling for $210 how much was the coin before the mark up?

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

Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?