10 minus the sum of 2 and 3Solution: 33 times the difference of 4 and 2Solution: 5t he difference of 5 and 2, times 3Solution: 724 divided by the product of 6 and 2Solution: 912 minus half the sum of 6 and 4Solution: 113 times the sum of 4 and 1, minus 9Solution: 210 minus the product of 2 and 3Solution: 4t he sum of 3 and 5, divided by 4Solution: 65 plus the difference of 9 and 4Solution: 88 plus the quotient of 27 and 3Solution: 10t he sum of 4 and 1__2, multiplied by 2Solution: 12half the product of 3 and 6, plus 2Solution: Write an expression for each phrase. Then solve the problem.13Could you write the expression for problem 2 without parentheses? Explain.

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

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?