What is the y-intercept of the line represented by the equation y=7x+2

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

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.

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x