Simplify the following expression. (3x + 4)(x − 7)
2 answers:
<h2>Answer:</h2>
The given problem is in algebra, this is because it has both variable and constant.
From question, we need to find the simplified form of the given expression. The simplified form denotes the form which is more understandable form.
Now, we need to multiply the brackets,
On solving,
Which cannot be solved further.
This expression has ‘x’ to the power 2 which will form second order equation when equated to zero.
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Answer:
He must charge minimum £0.84 for one hot dog.
Step-by-step explanation:
Ingredients cost for hot dogs at the supermarket,
Price of dog sausages tin of 8 = 50p ≈ £0.5
Price of dog bun packs of 6 = 90p ≈ £0.90
Number of tins required for 150 hot dogs = = 6.25
So student will purchase 7 tins.
Cost of 7 tins = 7 × 0.5
= £3.5
Number of dog buns packets required = = 25
Cost of 25 packs = 25 × 0.9
= £22.5
Total cost of the material used for 150 buns = 22.5 + 3.5
= £26.0
Let the selling price of each hot dog = £x
Then selling price of 150 hot dogs = £150x
Students wants the profit = £100
So, Selling price - Cost price = profit
150x - 26 = 100
150x = 126
x =
x = £0.84
Therefore, he must charge minimum £0.84 for one hot dog.