Monica's school and hold a car wash to raise money for solve the system to answer the questions a moto a parade in New York Co Altar washing 125
cars they made $75 from a combination of $500 quick
How many premium car washes were ordered?
washes and SS 00 premium washes
premium car washes
This system of equations models the situation
How many quick car washes were ordered?
quick car washes

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

Arectangular exercise mat has a perimeter of 36 feet the length of the mat is twich the width writeand solve an equation to determine the length in feet. of the mat then find the area in square feet of the mart

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60