Option 1 is the correct answer
Answer:
Jeremiah travels at 26.667 mi/hr and Ermias travels at 18.667 mi/hr.
Step-by-step explanation:
Say Ermias' speed is 's' and Jeremiah's is 'v'
distance = rate * time
distance = ( v * time) + ( s * time)
v = s + 8
240mi = ( (s+8) * 8 ) + ( s + 8)
240 = (8s +64) + s + 8
240 = 9s + 72
240 - 72 = 9 s
168 = 9 s
18.6666667 = s
v = 18.6666667 + 8
v = 26.6666667
<span> A vertical line has undefined slope because all </span>points<span> on the line have the same </span>x-coordinate<span>. As a result the </span>formula <span> used for slope has a </span>denominator<span> of 0, which makes the slope undefined..
So the answer would be "vertical"
</span>
The total cost of 12 printers is; $493.41
Cost of first printer; C1 = $54
Cost of second printer is; 95% × 54 = $51.3
Cost of third printer is; 0.95 × 51.3 = $48.735
Cost of fourth printer = 0.95 × 48.735 = $46.298
Now, let us apply same pattern using a calculator for the remaining costs and we will have them as follows;
- Cost of 5th printer = $43.983
- Cost of 6th printer = $41.784
- Cost of 7th printer = $39.695
- Cost of 8th printer = $37.710
- Cost of 9th printer = $35.825
- Cost of 10th printer = $34.033
- Cost of 11th printer = $32.332
- Cost of 12th printer = $30.715
Total cost of the 12 printers is;
54 + 51.3 + 48.735 + 46.298 + 43.983 + 41.784 + 36.695 + 37.710 + 35.825 + 34.033 + 32.332 + 30.715 = $493.41
Read more about total costs of successive items at; brainly.com/question/16082169