Every morning, Jane runs around a rectangular garden with a length of l and a width of w. If she completes four laps around the garden, which expression best approximates the total distance she ran? A.
4(l + w)
B.
8(l + w)
C.
4(l)(w)
D.
8(l)(w)

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4