chloee2004 chloee2004 03-02-2018 Mathematics contestada Efrain must spend less than $80 on his phone bill this month. He pays a monthly fee of $16, plus an additional $4 for each long-distance call. 4x + 16 < 80 How may long-distance calls can Efrain make this month? A. x<16 B. x<48 C. x<4 D. x<64