Solve for x:
7x(x+1.8)=0

Need help ASAP.

Answer is not x=-1.8 or x=0

What are “like terms”? why can we only add like terms?

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.

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall