2.9 1.

A company wishes to purchases advertisements for a website. The cost of the advertisements isC(x) = 2x²+ 5x+ 3,

wherexis the number of blocks of 1000 advertisements, andxcan be a fraction.It is estimated that the revenue generated forxblocks is given byR(x) = 7x+ 10.

First determine the formula for the total profit based on the revenue and cost functions given above.Second, determine the number of blocks to purchase that will maximize the total profit. Enter an exact answer even if it is a fraction.

Profit as a function ofx=

Number of blocksx=