−4x+7y+5=0 x−3y=−5 how many solutions does the system have? choose 1 choose 1

Consider a graph for the equation y= -3x+4. what is the y intercept? a) 4 b) -4 c) 3 d) -3

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

This is so hard and it’s for a test