Answer:
r=-4
Step-by-step explanation:
r-6=6+4r
-4r+r=6+6
-3r=12
3r=-12
r=-12/3
r=-4
$216 x 0.08 = $17.28.
Therefore $17.28 was collected for sales tax.
ANSWER
The points (1,2) and (7,2) lie on the given curve.
EXPLANATION
The given parametric equations are:
and
We make t the subject in the first equation to obtain:
We substitute this into the second equation to get:
When x=1,
When x=2
When x=7,
Therefore the points (1,2) and (7,2) lie on the given curve.