Write each of these numbers in standered form 2.75 * 10^5

Which shows the pre image of triangle xyz

Can someone answer this question? : )

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.