75 points!: Suppose you play third base for you high school softball team, in the last four games you had a a total of 6 hits in 15-at-bats. Assuming you will have 4-at-bats at tomorrow's game. How many hits will you need to have a batting average greater than .450? Write and solve an inequality to find the number of hits you need. I'm stumped on writing an inequality, and I have to write 4 more after this, so an explanation would be helpful and appreciated. Right now all I have is, >=.450

Which multiplicative property is being illustrated below? (type commutative, associative, or identity) 5 × 2 × 4 = 2 × 5 × 4

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

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?