Answer: Jessica is correct
==================================================
Explanation:
- Antonio is not correct because 3 cubed is not 9. Instead, it's 3^3 = 27. Note that 3^3 = 3*3*3 = 27. Another example would be 4^3 = 4*4*4 = 64. The good news is that he has the correct starting expression because the r^3+9 portion is the sum of r cubed and 9, then we double it.
- Jessica is correct. She has the correct starting expression and has evaluated 3^3 correctly. Also, the final answer 72 is correct as well.
- Maria doesn't have the correct starting expression.
- The same goes for Mark. His starting expression isn't correct.
Answer:
Step-by-step explanation:
The nuts cost $2 per pound
Chocolate coated candies costs $0.5 per pound.
We know that we want x lb of nuts mixed with 35lb of chocolate coated candies in order to have a mixture that costs $1.49 per pound.
We must write the equation in terms of $ per pounds.
We can use the points (1, 4) and (4, 9) to solve.
Slope formula: y2-y1/x2-x1
= 9-4/4-1
= 5/3 or 1 2/3
Best of Luck!
Answer:
where −5 ≤ x ≤ 3
Step-by-step explanation:
The given function is .
We want to select the option that describes all the solutions to the parabola.
The domain of the parabola is −5 ≤ x ≤ 3.
This means that any x=a on −5 ≤ x ≤ 3 that satisfies (a,f(a)), is a solution.
This can be rewritten as
Therefore for x belonging to −5 ≤ x ≤ 3, all solutions are given by:
where −5 ≤ x ≤ 3.