There are 12 state quarters and 5 regular quarters in a jar. rees randomly picks up a quarter, puts it back in the jar, and then picks another quarter without looking.
the probability that he will take out a state quarter, and then a regular quarter is
write your answer as a simplified fraction.

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.

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?