Which of the following best represents the speed of halley's comet when it is nearest to earth?
a) 1 × 105 kilometers per hour
b) 1 × 10-5 kilometers per hour
c) 1 × 105 kilometers per year
d) 1 × 10-5 kilometers per year

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3