9 to the x power=3 to the 40th power

Someone explain how?

14 х2 - 8 х + 3 - 6 х2 + 7x-11

Describe the value of the 9 in 926,415.

During the past 10 years, the amount of money, M (in billions of dollars), spent in North America by car dealerships advertising their product can be modeled by the equation M = 1.2e0.25t + 0.13.

A region's mouse population in year n is given by the second-order difference equation Pn=2Pn-1+8Pn-2. If A and B are constants that depend on current and past populations, what general form must an equation for the population in year n take?

What what is the x = solution to 6x 9=3x - 3

Bag a contains 7x counters bag b contains 2x counters Five counters are taken from bag a and put in bag b

Angela and Doreen each want to buy the same comb. Angela still needs 58 cents to buy a comb and Doreen still needs 6 cents. If they want to combine their money, they still do not have enough. What is the most the comb could cost?

The rate for one unit of a given quality is called a (n)

Her coins have a total value of $9.50. She has a total of 50 coins. Write systems of equations can be used to find the number of dimes, 푑푑, and the number of quarters, 푞푞, Alexis has. Solve the system and explain what the solution mean.

33/50 in decimal form