Simplify the difference quotient f (x) = x^2+9

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.2 GPa, respectively. Suppose the distribution is normal.

Kayla buy's a shirt for $8.19 she pays with a $10 bill how much change will she receive

There are 300 coins of the same type in two stacks. One stack is 380 millimeters tall. The other is 220 millimeters tall. Find the thickness of one coin

Julie owns a video store. Her monthly expenses, including rent, average $1,168. This year she made $34,416 in revenue. What is the difference between her average monthly revenue and her average monthly expenses?

Currently, you have made a 75, 83, and a 78 on your tests in math. What do you need to make on the next test in order to get an average of an 80?

Ling bought 3 DVDs for $15.95 each and a DVD player for $64.99. After sales tax, her total came to $119.89. What is the sales tax rate? Round your answer to the nearest hundredth, if necessary.

Let f (x) = 2x+3. The average rate of change of F (x) over any interval equals 2. A. True B. False

Robert gives roping lessons at the Sundown Corral. A 3-hour lesson costs $120.00. The cost of a lesson is proportional to the duration, in hours, of the lesson. What is the constant of proportionality in terms of dollars per hour?

If two people play tic tac toe choosing their moves randomly, what are the odds that they will tie

Candace is finding 67 x 2. She thinks the product is 124. Find and correct her mistake.