An exponent is shorthand for repeated multiplication.  for example, 
n4
=n·n·n·n.   in an exponential expression like ba, b is called the base and a is called the exponent.
expand each of the expressions below. for example, to expand
x3, you would write: x·x·x.

1. y7



2. 5(2m)3



3. (x3)2



4. 4x5y2



Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

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.

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5