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
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.
Solve the following two-step equation for x.
3x-12=21
A.x=10
B.x=11
C.x=3
D. x=4
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.
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
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.
Find the product. (-2)(15)
A. 30
B.-30
C.-13
D. 13
The product of -2 and 15 is -30.
Therefore, the correct choice is B. -30.