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Joe is buying apples and persimmons at the grocery store. Each apple costs 
$0.99, and each persimmon costs 
$0.79. If Joe has 
$10, which of the following inequalities describes 
x, the number of apples, and 
y, the number of persimmons, that he can buy?
Choose 1 answer:
(A) 
0.79 x+0.99 y >= 10
(B) 
0.99 x+0.79 y >= 10
(c) 
0.79 x+0.99 y <= 10
(D) 
0.99 x+0.79 y <= 10

Joe is buying apples and persimmons at the grocery store. Each apple costs $0.99 \$ 0.99 , and each persimmon costs $0.79 \$ 0.79 . If Joe has $10 \$ 10 , which of the following inequalities describes x x , the number of apples, and y y , the number of persimmons, that he can buy?\newlineChoose 11 answer:\newline(A) 0.79x+0.99y10 0.79 x+0.99 y \geq 10 \newline(B) 0.99x+0.79y10 0.99 x+0.79 y \geq 10 \newline(C) 0.79x+0.99y10 0.79 x+0.99 y \leq 10 \newline(D) 0.99x+0.79y10 0.99 x+0.79 y \leq 10

Full solution

Q. Joe is buying apples and persimmons at the grocery store. Each apple costs $0.99 \$ 0.99 , and each persimmon costs $0.79 \$ 0.79 . If Joe has $10 \$ 10 , which of the following inequalities describes x x , the number of apples, and y y , the number of persimmons, that he can buy?\newlineChoose 11 answer:\newline(A) 0.79x+0.99y10 0.79 x+0.99 y \geq 10 \newline(B) 0.99x+0.79y10 0.99 x+0.79 y \geq 10 \newline(C) 0.79x+0.99y10 0.79 x+0.99 y \leq 10 \newline(D) 0.99x+0.79y10 0.99 x+0.79 y \leq 10
  1. Step 11: Determine cost per apple and persimmon: Determine the cost per apple and the cost per persimmon. We are given that each apple costs $0.99\$0.99 and each persimmon costs $0.79\$0.79.
  2. Step 22: Define variables for number of apples and persimmons: Let xx represent the number of apples Joe can buy, and yy represent the number of persimmons. The total cost for apples is then 0.99x0.99x, and the total cost for persimmons is 0.79y0.79y.
  3. Step 33: Combine costs of apples and persimmons: Combine the costs to express the total amount Joe spends on apples and persimmons. This is the sum of the cost of apples and the cost of persimmons, which is 0.99x+0.79y0.99x + 0.79y.
  4. Step 44: Set the total cost inequality: Joe has $10\$10 to spend, so the total cost of apples and persimmons must be less than or equal to $10\$10. This gives us the inequality 0.99x+0.79y100.99x + 0.79y \leq 10.
  5. Step 55: Match the derived inequality with answer choices: Check the answer choices to find the inequality that matches our derived inequality. The correct inequality is (D) 0.99x+0.79y100.99x + 0.79y \leq 10.

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