Im very confused with this question dose anyone know how to do it?
3.015 x 10^-7

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Which of the following is the true for f(x) = 5cos

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5