A store sells four-packs of permanent markers in assorted colors for $3.19 per pack. All spiral-bound notebooks, whether wide-ruled or college-ruled, sell for $1.20 each. Cleo buys x packs of markers, y wide-ruled notebooks, and z college-ruled notebooks. The store charges a 6% sales tax on Cleo’s total bill. Which expression represents the amount Cleo must pay after taxes? A.
3.19x + 1.20y + 1.20z + 1.06
B.
3.19x + 1.20yz + 1.06
C.
1.06(3.19x + 1.20yz)
D.
1.06(3.19x + 1.20y + 1.20z)

D. 1.06(3.19x + 1.20y + 1.20z)

Step-by-step explanation:

Since marker packs are 3.19 each, the cost of the marker packs she buys can be represented by 3.19x.

All spiral notebooks are 1.20 each, so the cost of the wide ruled notebooks can be represented by 1.20y.

The cost of the college ruled notebooks can be represented by 1.20z.

In the expression, all of these terms have to be added together and multiplied by 1.06 to calculate the sales tax.

So, the expression will be 1.06(3.19x + 1.20y + 1.20z)

D is the correct answer

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.