Twelve years ago Greg was 1/4 Bobby’s age. Now Greg is one greater than 1/2 Bobby’s age. How old is Bobby? What is the slope of a line containing points (4,6) and (3,8)? What is the volume of a cube whose surface area is 96? How many cylindrical oil drums, with a diameter of 1.5[…]
6x+7y=-10 ; -4x+8y=32 Based on the system of equations above, what is the value of the difference y-x? 4x-2y=16 ; 7x+4y=13 Based on the system of equations above, what is the value of the sum x+y? Hailey is going on a road trip and needs to rent a car. The company has a $3 untaxed car cleaning fee for[…]
3x-4y=24 What is the slope of a line perpendicular to the line above? 8x+4y=12 What is the slope of a line perpendicular to the line above? 3x+15y=18 ; mx+5y=2 In the system of linear equations above, m is a constant. If the system has no solution, what is the value of m? 2x+4y=6 ; gx+12y=13 In the system of linear equations[…]
What is the value of x? x+7y=-9 ; x-14y=-50 A=1009 + 7.08t. Find an expression for time (t) in terms of a. For what value of n is |n-2|+6 equal to zero? 1/4x+1/3y=4 ; vx+9y=3 In the system of linear equations, v is a constant. If the equations are parallel, what is the value of v? 7x-4y=32 What is the[…]
Staples now sells their own notebooks. Making notebook has a fixed factory cost of$6,000 and a per unit cost of $0.58 per notebook. Staples sells these notebooks for $3.99 each. As a function of the number of notebooks staples sells (n), write an equation for Staples’ profit P(n). How many notebooks does Staples need to[…]
F(x)=5x-1/2 F(x)=ax+b Interpret a and b. If F(7m)=80m, find all values of m. The quantity of pens supplied can be described as a function of price (p) such that s(p)=80+4p. The quantity of pens demanded can be described as a function of price(p) such that d(p)=100-1/2p. How do s(p) and d(p) differ? A market clears[…]
The final price of a TV is $490 after a 9% tax and 18.25% discount. Find the original price. Gender and Happiness are independent. The probability that a person is female is .5. The probability of being happy is .35. Find the probability that a randomly selected person is an unhappy male. 2(a+b)=5b. Find a/b[…]
In a group of 8 girls and 4 boys, how many ways are there to select 2 boys and 2 girls? A bag contains 12 marbles-3 green, 4 red, and 5 yellow. 3 marbles are randomly selected. Find the probability that 2 marbles are green and 1 is red? 3 marbles are again randomly selected.[…]
How many integers between 0 and 999 contain a single digit that is a 7? The probability of scoring 90 or above is .35 in a group of 11 students, find the probability that 10 or 11 score a 90 or above? In a bag there are 6 blue marbles, 4 red marbles, 7 yellow marbles,[…]
Tam’s Club sells 6c cartons of calculators per box and 12m boxes per day. How many cartons are sold in a year? Tabitha waters 7 plants per day. If there are 8m plants per garden and 2x gardens per neighborhood, how long would it take her to water 12 neighborhoods? The line t passes through[…]