The amount of money (in dollars) that it costs to purchase x amount of square feet of carpet is given by f(x)=7.5x. the instillation fee is $100 more than 5% of the cost of the carpet. write a function that represents the instillation fee. then use this function to find the instillation fee for 150 square feet of carpet.

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)