<span>–10, –7.5, –5, –2.5, …
Is defined by the formula because the next term can be obtained by adding 2.5 to the current one.</span>
If x=3
(1/3)y2+12=15
(1/3)y2=15-12
(1/3)y2=3
y2=3*3
y2=9
y=3
The table is missing though but you may consider the following calculations :
Y = 1.6 x
for x = 1 minutes
Y = 1.6 laps
for x = 2 minutes
Y = 3.2 laps
for x = 3 minutes
Y = 4.8 laps
I don’t really know what the answer is
