a. The speed is represented by 7 miles an hour
b. f(t)=7t
c. 28 miles
1st one is -9x+6, -16x-14, 7x+3,4x-14, 3x+11,-9x-2,24x-40
Answer:

Step-by-step explanation:
A line with the highest absolute value of slope has the steepest graph
from the option, the highest is 5/2 so, y = 5/2 x is your answer.
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Answer: Add the number previously added multiplied by 3;
+3x, where x is the number that was added previously
Step-by-step explanation:
3+5=8. That's the first equation, where 5 is x. Then the next equation, 8+3x=23. 8+15=23. It works for all of the equations, so that's the pattern.