For the given parametric equations, find a corresponding x-y equation for the curve. 
Definitions:
Reward Circuitry
The brain systems involved in the recognition and pursuit of rewards, playing a key role in motivation, pleasure, and addiction.
Contraception
Methods or devices used to prevent pregnancy as a result of sexual intercourse, aiming at controlling fertility and childbirth.
Intrauterine Device
A small contraceptive device, often T-shaped, inserted into the uterus to prevent pregnancy.
Spermicide
A chemical product used during sexual activity to kill sperm and significantly reduce the likelihood of pregnancy.
Q2: A cation has a _ charge, and
Q7: In a demonstration of strong electrolytes, weak
Q49: Which graph below corresponds to the given
Q57: A burette (shown below) was used to
Q73: If you had equal masses of each
Q79: Medicines usually are dispensed in units of
Q80: Which of the following is a heterogeneous
Q98: A food chemist determined the concentration of
Q113: Active metals often form a protective oxide
Q124: Which picture best represents an atomic-level view