Which of the following is equivalent to 2^(2x+1)? a)2^2x+2
b)2^(2x)x 2
c)2^(2x)+1
d)2^(2x)+1

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.