Write an equation that can be used to solve the problem. Then solve the equation and answer the question.Two times the reciprocal of a number equals 20 times the reciprocal of 25. Find the number.
A. 7
B. 
C. 
D. 50
Answer: C
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You sell calculators at a base price of $63 each. To encourage volume purchases, you deduct $2 from the base price for each extra calculator purchased. So, if one calculator is purchased you charge $63. If two are purchased you charge $61 for each calculator. If three are purchased, you charge $59 for each calculator, and so on. ? A. What is the total amount you charge a customer who buys 5 calculators? ? B. What is the total amount you charge a customer who buys 6 calculators? ? C. Write a formula that gives the total amount C, in dollars, you charge a customer who buys n calculators.
What will be an ideal response?
Find the axis, domain, and range of the parabola.f(x) = -3x2 + 12x - 10
A. axis: x = 2 domain: (-?, ?) range: (-?, 2] B. axis: x = 4 domain: [2, ?) range: (-?, ?) C. axis: x = 4 domain: (-?, 2] range: (-?, ?) D. axis: x = 2 domain: (-?, ?) range: [2, ?)
Solve the problem.Find the distance in kilometers between the cities whose latitudes are given. Assume that the cities are on a north-south line and that the radius of the earth is 6400 km. City E, 39°N and city F, 9°S
A. 3343 km B. 5370 km C. 3351 km D. 5362 km
Use synthetic division to determine whether x - c is a factor of the given polynomial.3x3 - 25x2 + 13x + 105; x - 7
A. Yes B. No