Answer:
x = -2
General Formulas and Concepts:
<u>Pre-Algebra
</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define
</u>
6 - 9x = 5x - 9x + 16
<u>Step 2: Solve for </u><em><u>x
</u></em>
- Combine like terms: 6 - 9x = -4x + 16
- Add 9x on both sides: 6 = 5x + 16
- Subtract 16 on both sides: -10 = 5x
- Divide 5 on both sides: -2 = x
- Rewrite: x = -2
Answer: D. 8.50a + 6.75k + 1.75(a + k)
Step-by-step explanation:
Cost of adult meal = $8.50
Cost of kid meal = $6.75
Cost of drink = $1.75
Number of adults = a
Number of kids = k
Since everyone orders a meal and
a drink, the expression that can be used to express the total cost of the meal will be:
Cost for adults:
= (8.50 × a) + (1.75 × a)
= 8.50a + 1.75a
Cost for kids:
= (6.75 × k) + (1.75 × k)
= 6.75k + 1.75k.
To get the total cost, we add the cost for adults and kids together. This will be:
= 8.50a + 1.75a + 6.75k + 1.75k.
= 8.50a + 6.75k + 1.75a + 1.75k
= 8.50a + 6.75k + 1.75(a + k)
Therefore, the correct option is D.
Jennifer had $4 left. 1/5 of 30 is 6, 1/6 of 30 is 5 and 1/2 of it is 15. Add it together and you get 26. 30-26 is 4
