Find the equation, in standard form, of the line passing through the points (5,1) and (-2,3).
a: 7x+2y=-17
b: 2x-7y=17
c : y=7/2x-7
d: 2x+7y=17

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.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?