It takes a boy 20 minutes to mow the lawn, but his sister can mow it in 60 minutes. How long would it take them to mow the lawn if they worked together, using two lawn mowers?

Winter coats are on sale starting April 1st. A leather coat is on sale for 40% off the regular selling price of $425.99. What is the markdown to the nearest cent?

Elizabeth rode her bike 6 1/2 Miles from her house to the library and then another 2 2/5 miles to her friend Millo's house. If Carson's house is 2 1/2 miles beyond Millo's house, how far would she travel from her house to Carsons house?

What is the value of f (x) 2/3x-11 when x=21

A manufacturer of lighting fixtures has daily production costs of C = 800 - 40x + 0.25x2, where C is the total cost (in dollars) and x is the number of units produced. How many fixtures should be produced each day to yield a minimum cost?

Find B - A if the graph of Ax + By = 7 passes through (2,1) and is parallel to the graph of 2x - 7y = 3.

What angle do the minute and hour hands of a clock make at 8:00

What is the least common multiple of 7 and 8

On a coordinate plane, a straight line with a negative slope, labeled f of x, crosses the y-axis at (0, 4), and the x-axis at (4, 0). Which is true regarding the graphed function f (x) ? f of 0 = 3 f of 5 = negative 1 f of 3 = 2 f of 2 = negative 2

Which of the following is a solution to: x2 + 8x=-12

What is the difference between direct and indirect distribution?