Reena saves AED 400 from her salary. If this is 10% of her salary. What is her salary? a) AED 4000 b) AED 6000 c) AED 3000 d) AED 40,000

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !