Evaluate the integral using the indicated trigonometric substitution. sqrt(x2 − 81)/x dx, x = 9 sec()

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Write the expression 7x^3-28xy^2 as the product of 3 factors