H represents the number of hours:
10h + 40
(40 represents, well $40)

now, a line perpendicular to that one, will have a "negative reciprocal" slope, thus
Answer:
3
Step-by-step explanation:
I think its 3 because if its 6 then you divide. it by 2
Answer:
See below.
Step-by-step explanation:
1.) False - It contains 6 sig figs, not 2.
2.) False - It goes up to 2 decimal places, not 3.
3.) True
4.) False - It goes up to 1 sig fig, not 4.