Robbie returned an acoustic guitar that cost $245.75. He bought a bass guitar that cost $368.45. Which statement is true? A. The sum 245.75 + (–368.45) = –122.70 means that Robbie still owes $122.70 for the bass guitar. B. The sum 245.75 + (–368.45) = –122.70 means that Robbie will receive a refund of $122.70. C. The sum –245.75 + 368.45 = 122.70 means that Robbie still owes $122.70 for the bass guitar. D. The sum –245.75 + 368.45 = 122.70 means that Robbie will receive a refund of $122.70.

A. The sum 245.75 + (–368.45) = –122.70 means that Robbie still owes $122.70 for the bass guitar.

Step-by-step explanation:

Since Robbie returned a guitar that cost $245.75, he will be recieving a positive amount of money, being a gain of money; then he decides to buy a bass guitar, which costs $368.45, which makes it a loss of money, thus A would be the correct answer.

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

step-by-step explanation: