Taylor swift is selling digital copies and hard copies of her newest album . If she sells 13 hard copies and 7 digital copies ,the total is 107$.if Taylor sells 7 hard copies and 7 digital copies , the total is 77$ . Find the cost of Taylor swift's digital album

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y

they charge the same amount at 20 minutes.

step-by-step explanation:

the answer is c

step-by-step explanation: i took a test with this question on it

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )