For $7.90, you purchased 8 items (pens and highlighters) from a local bookstore. Each highlighter cost $1.09 and each pen cost $.68. Write a system of equations that can be used to find how many of each you bought. A. 8p+8h=7.90 and 1.09+.68h=7.90

B. h+p=8 and .68h+ 1.09p=7.90

C. p+h=7.90 and .68p+1.09h=8

D. h+p= and 1.09h+.68=7.90

D, i believe it should be h+p=8 and 1.09h + 0.68p = 7.90

Step-by-step explanation:

purchased 8 items in total; therefore, h+p=8

cost of each item, multiplied by quantity, equals grand total of $7.90

0.09x +10 is the first choice

0.07x +16 is the second choice (set the two data plans equal to each other)

0.09x +10 = 0.07x +16  (subtract 0.07x from both sides)

0.02x +10 = 16 (subtract 10 from both sides)

0.02x = 6  (divide both sides b 0.02 to isolate x)

x= 300 MB of data (the answer)

Step-by-step explanation:

I hope this helps :))