Factoring Trinomials
2x^2+5x-2
Prime, None add up to 5
Two students in Ms. Romean's class are working on finding the mean for the following set of numbers: 2, 12, 16, 4, 18, 24, 32. Susan states that the answer is 15.4 when rounded to the nearest tenth. She added all of the numbers and divided by 7. Sam disagrees and thinks the answer is 54. She added all of the numbers and divided by 2. Which student is correct?
Susan
Solve by GCF 8x + ax
x(8 + a)
Jason Jumped off a cliff into the ocean. His height is represented by the function h(t)= 16t^2 + 16t + 480. h is height in feet and t is time in seconds. What is Jason's initial height?
480 feet
1x^2-10x-24
(x+2)(x-12)
5,7,8,9,12,18,19,22,22
What is the median?
12
Solve by GCF xm - ym
m(x - y)
If a toy rocket launched vertically with a vertically at an initial velocity of 128 feet per second, then its height h, after t seconds is given by the equation h(t)= -16t^2 + 128t. How long did it take for the rocket to reach the ground?
8 seconds
2x^2+5x+3
(x+1)(2x+3)
5,7,8,9,12,18,19,22,22
What is the mode?
22
Solve by GCF 8(x+3) + a(x+3)
(8+a)(x+3)
Jason Jumped off a cliff into the ocean. His height is represented by the function h(t)= 16t^2 + 16t + 480. h is height in feet and t is time in seconds. How long did it take for Jason to reach his maximum height?
0.5 seconds or 1/2 a seconds
6x^2+17x+5
(3x+1)(2x+5)
5,7,8,9,12,18,19,22,22
What is the mean? Round to the nearest tenth.
15.6
Solve by GCF 2x(3x + 1) + 3(3x + 1)
(2x + 3)(3x + 1)
If a toy rocket launched vertically with a vertically at an initial velocity of 128 feet per second, then its height h, after t seconds is given by the equation h(t)= -16t^2 + 128t. How long did it take for the rocket to reach its maximum height?
4 seconds
3x^2-3x-6
3(x+1)(x-2)
Suppose that we are studying the amount of time customers wait in line at the checkout at supermarket A and supermarket B. the average wait time at both supermarkets is 5 minutes.
At supermarket A, the standard deviation for the wait time is 2 minutes.
At supermarket B, the standard deviation for the wait time is 4 minutes.
Which supermarket should you choose to shop at?
Supermarket B
Solve by GCF 5x(x - 2) + (x - 2)
(5x + 1)(x - 2)
Jason Jumped off a cliff into the ocean. His height is represented by the function h(t)= 16t^2 + 16t + 480. h is height in feet and t is time in seconds. What is the highest point that Jason reached?
484 feet