So the way you would do this problem would be to solve for how many pens he was able to buy if he bought $9.75 worth of pens for $0.75 each. so to find the number of pens you would do 9.75/0.75, which equals a total of 13 pens. so he bought 4 times as many pencils so to find the number of pencils he purchased you would multiply 13 by 4 which equals 52 total pencils. to find the cost that aaron paid total you would multiply 52x0.35 which equals $18.20
Plug in 4 for l, 6 for w, and 7 for h
V = (1/3)(4)(6)(7)
Multiply the terms together
V = (1/3)(168)
Note that when multiplying 1/3 with 168, you are really dividing by 3
V = 168/3
V = 56
B) 56 cu. in is your answer
hope this helps
One side: y+4
Second side: y+4+2=y+6
Third side: 2(y+4)-3= 2y+8-3= 2y-5
Perimeter = y+4+y+6+2y-5= 4y+5
