The graph of which function passes through the point (0, pi/2)

y = cos-'(x)
y=csc-'(x)
y = sec-(x)
y = sin-'(x)

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

Which of the following is the true for f(x) = 5cos

What’s the answer ? use the picture to see the problem