What is the member price for a shirt selling for $19.50? and 10% off
a. $17.55
b. $18.55
c. $19.00
d. $19.40

Which one ? is the answer and how to find this answer

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.