1/2 x 7 is it 14/2 or 3 1/2 or 14 or 3

Classify the following triangle check all that apply

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 graph represents the equation y =4x