The probability of event a occuring is 0.3 and the probability of event b occurring is 0.4. what is p(a and b) given that a and b are independent events?

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?