Margo bought 7 pens from a bookstore. some of the pens cost $3 each, and the rest cost $4 each. if she paid a total of $23 for the pens, how many of the $3 pens did she buy? look at picture above for answer choices.

Hi! mark me brainliest if i : )y = 0.213x – 352.0    represents this linear model shown in the data table.plug in the values of x into the equation for a double check.let's try 1980.y = 0.213(1980) – 352.0y = 69.74which is closest to the 70.1 whereas other options do not satisfy the condition.