单选题Phil has x quarters, y dimes, and z nickels and nothing else. Which of the following expressions represents the amount of money that Phil has, in dollars?A0.25x + 0.10y + 0.05zB2.5x + 1. 0y + 0.5zC25x + 10y + 5zD0.25x + 0.10y + 0.5zE25x + 10y + 50z
单选题
Phil has x quarters, y dimes, and z nickels and nothing else. Which of the following expressions represents the amount of money that Phil has, in dollars?
A
0.25x + 0.10y + 0.05z
B
2.5x + 1. 0y + 0.5z
C
25x + 10y + 5z
D
0.25x + 0.10y + 0.5z
E
25x + 10y + 50z
参考解析
解析:
Multiply the value of each coin by the number of coins and add. 0.25x + 0.10y + 0.05z.
Multiply the value of each coin by the number of coins and add. 0.25x + 0.10y + 0.05z.
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