It would be the absolute value of -74 - 48. so the answer is 28.
Grouth is when a>1
if a=1, theer is no change
if a<1, it is exponetial decay
B is answer
However many X's are on the speed, that's how many cars had that speed. For example on the chart, 29 has one X above it; therefore, there was one car that had the speed 29 mph. :)
Two quarters .50, Two dimes .10, One nickel .05, and Two pennies .02.
.25*2=.50+.10=.60+.10=.70+.5+.2=.77
The answer is 19/2, hope this helps.