Answer:-21
Step-by-step explanation:
3•(-7)
3 x -7=-21
The steps you need to do to evaluate the expression are (b) Drag zero pairs to the window. and (c) Remove the 5 groups of –2 tiles.
<h3>How to determine the steps you need to do to evaluate the expression</h3>
The expression is given as:
-5(-2)
The above expression represents the product of -5 and -2
This can be interpreted as:
- Removal of 5 groups of -2; to remove means negative
- Dragging zero pairs of 5 and 2 to the interactive window
Hence, the steps you need to do to evaluate the expression are (b) Drag zero pairs to the window. and (c) Remove the 5 groups of –2 tiles.
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Mary should charge $8.0 per ounce.
From the question the herbal tea is a blend of 2 kinds of mint:
75% spearmint- $2.25
25% peppermint-$ 2.75.
The cost of producing one ounce is:
75% spearmint- $2.25 + 25% peppermint-$ 2.75. =$5
The cost of the tea if it is to be sold 1.6 times will be calculated thus;
$5×1.6= $8.0
To get the new cost of the mint tea blend, the old cost is thus, multiplied by 1.6. This gives us the new cost of the mint tea blend.
Therefore cost per ounce will be $8.0
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