Abc bookstore sells new books according to the demand function p = -q + 38, where p is the price and q is the quantity. if the bookstore charges $8 for a new book, how many new books can the store expect to sell?

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)