Anyone wanna help me with my Algebra??? It would be greatly appreciated, Thx!
Find the domain of the function f(x)=4x-1
A. {x/x>0}
B. {x/x≥1}
C. {x/x≠0}
D. All real numbers

Solve the system of equations. y= 2x y= x^2 - 15

Pls brainliest will be awarded if answer is correct

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.