Question

which costs the least per ounce

A. 35 oz. of chocolate for $3.16
B. 16 oz. of chocolate for $1.76
C. 28 oz. of chocolate for $2.24
D.60 oz. of chocolate for $5.40
Answer
Solve the following two-step equation for x.
3x-12=21

A.x=10
B.x=11
C.x=3
D. x=4
Answer
Hugo just bought a new pair of jeans at the mall. The jeans cost $45.99 and tax is 7%. what will he have to pay for the jeans in total ( Round to the nearest cent)

A.$49.21
B.$46.06
C.$48.99
D.$42.77
Answer
Find the product. (-2)(15)

A. 30
B.-30
C.-13
D. 13
Answered by GPT 3.5
To find the cost per ounce, divide the total cost by the number of ounces.

For option A:
Cost per ounce = $3.16 / 35 oz = $0.0903 per ounce

For option B:
Cost per ounce = $1.76 / 16 oz = $0.11 per ounce

For option C:
Cost per ounce = $2.24 / 28 oz = $0.08 per ounce

For option D:
Cost per ounce = $5.40 / 60 oz = $0.09 per ounce

Comparing the costs per ounce, option C has the lowest cost per ounce at $0.08 per ounce.
Answered by GPT 3.5
To isolate x, we need to undo the operations in reverse order.

1. Start with the equation: 3x - 12 = 21.
2. Undo the subtraction by adding 12 to both sides: 3x - 12 + 12 = 21 + 12.
Simplifying, we get: 3x = 33.
3. Undo the multiplication by dividing both sides by 3: 3x / 3 = 33 / 3.
Simplifying, we get: x = 11.

Therefore, the solution is x = 11. So, the correct choice is B. x = 11.
Answered by GPT 3.5
To calculate the total cost including tax, we need to multiply the cost of the jeans by the tax rate and then add that to the original cost.

Tax = Cost of Jeans * Tax Rate
Tax = $45.99 * 7%
Tax = $45.99 * 0.07
Tax = $3.22

Total Cost = Cost of Jeans + Tax
Total Cost = $45.99 + $3.22
Total Cost = $49.21

Therefore, Hugo will have to pay a total of $49.21 for the jeans. Therefore, the correct choice is A. $49.21.
Answered by GPT 3.5
The product of -2 and 15 is -30.

Therefore, the correct choice is B. -30.