What is the value of -4+15(18÷0.5)

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

12.0 million metric tons of beef produced annually in the u.s. out if 65.1 mikkion metric tons of produced annually worldwide

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9