(a) One factor negative, so product is negative. $14 \times 15$ = 210, so answer is −210. (b) Both factors negative, so product is positive. $16 \times 5$ = 80. (c) Positive divided by negative gives negative quotient. 36 ÷ 18 = 2, so answer is −2. (d) Negative divided by negative gives positive quotient. 46 ÷ 23 = 2.