Answer:
C. 16
Step-by-step explanation:
5 is half of 10, so 8 should be half of the next number.
We assume the monetary amount is a number such that the hundredths place represents a penny. (It's not billions of dollars, for example.)
45.67×32.58 = 1,487.9286 ≈ 1,487.93
_____
Any calculator can give you the product. Most will round the number for you if you specify a 2 decimal digit display.
The thousandths digit of the product (8) is more than 4, so the hundredths digit (2) is increased by 1 (to 3) as the digits to its right are dropped.
The perimeter is the sum of all the sides, so P = (5x -7) + (3x-4) + (2x -6). Then group like terms so you have p = 5x + 3x + 2x -7-4-6 and end up with P = 10x - 17