If x = 3 and y = 2 •3x, solve for y
What is 54
Define your variables and write a system of equations can be used to model the following scenarios? There are 50 animals. Some of the animals have 2 legs and the rest of them have 4 legs. In total there are 172 legs.
x represents animals with two legs y represents animals with 4 legs.
2x+4y=172
x+y = 50
x represents animals with two legs y represents animals with 4 legs.
Solve for 'a' in the equation h = a • b + r in terms of h, b, and r.
What is a = (h-r)/b
What is the discriminant?
b^2-4ac
In the equation y=abx, what does a represent?
the y-intercept
Amelia buys an empty sticker album and some sticker sheets. The equation that relates the total cost for the empty sticker album and 'N' sticker sheets is P= 0.75N + 300. What does the number 0.75 in the equation represent?
The cost of each sticker sheet
2x+3y = 7
4x+6y =14
Infinite solutions
y=4(3)x What is the base?
3
After Allie takes some medicine, each hour the number of milligrams of medicine (M) remaining in her body after t minutes can be modeled with the equation M=200(1-0.27)^t. Which number represents the decay rate?
0.27
In order to eliminate the y from the system of equations,
3x + 12y = 21
6x + 4y = 22
what could you do?
Multiply both sides of the second equation by -3
or multiply both sides of the second equation by 3 and subtract
Is y = 1.5x exponential growth or decay?
Growth
The height of a projectile thrown in the air can be modeled with the equation h= -16t^2 + 48t + 160, where t is the number of seconds. At 1.5 seconds, how high will the projectile reach?
What is 196 ft.
ls (5,3) a solution to the inequality 2x + y < 12
The population (P) of a town after tyeas can be modeled with the equation P= 20,000(1.07)^t. What does the 20,000 represent?
The starting population of the town
There are 900 birds in a forest. Each year the bird population increases by 12%. Write an equation relates the bird population (P) to the number of years that have passed?
P=900(1.12)^t