Solve this inequality: 3b – 7 < 32

2 answers:

7 0

Hello! So for this question, we need to get the number with the variable by itself. First, let's add 7 to cancel out -7. Add 7 to 32 to get 39. Then, we get 3b < 39. Now, divide each side by 3 to isolate the b. 39/3 is 13. There. b < 13. The answer is B.

gulaghasi [49]3 years ago

4 0

The answer is B, because if it were 13, the equation would be 39-7<32, which is not true, so it is less than 13, and therefore the answer is B.

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◆ Define the variables:

Let the calorie content of Candy A = a
and the calorie content of Candy B = b

◆ Form the equations:

One bar of candy A and two bars of candy B have 774 calories. Thus:

a + 2b = 774

Two bars of candy A and one bar of candy B contains 786 calories

2a + b = 786

◆ Solve the equations:

From first equation,
a + 2b = 774
=> a = 774 - 2b

Put a in second equation
2×(774-2b) + b = 786
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=> -3b = 786 - 1548
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◆ Find caloric content:

Caloric content of candy B = 254 calorie

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