A college student earned $8200 during summer vacation working as a
waiter in a restaurant on the boardwalk at the beach. The student invested part of the money at 7% and the rest at 10%. If the student received a total of $664 in interest at the end of the year, how much was invested at 10%
What was the amount invested at 10%? Show your work
A tour group split into two groups when waiting in line for food at
a fast food counter. The first group bought 6 slices of pizza and 4 soft drinks for $ 28.28. The second group bought 5 slices of pizza and 4 soft drinks for $ 24.50. How much does one slice of pizza cost?
– A. None of these.
– B. A slice of pizza costs $1.40.
– C. A slice of pizza costs $3.28.
– D. A slice of pizza costs $1.90.
– E. A slice of pizza costs $3.78.
If the solutions to a quadratic equation are 1 and – 5/2, what is the equation?
Be careful to write the quadratic in standard form: Ax2 + Bx + C = 0.
A, B, and C must be integers – no fractions, no decimals – and A must be positive.
What’s the equation?
The cost, in millions of dollars, for a company to manufacture x thousand speed boats is given by the function
C(x) = 4×2 – 32x + 128.
Find the number of speedboats that must be produced to minimize the cost.
To minimize the cost, how many speedboats must the company produce?
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