How many solutions does the system have?
x+y=3
5x+5y=15

A. Exactly one solution
B. No solutions
C. Infinity many solutions

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle