If 3t - 7 = 5t, then 6t=

-21

The variables x and y are directly proportional, and y = 2 when x = 3. What is the value of y when x = 9?

6

Here are the following graph equations:

(1) y = x - 3

(2) y = x + 3

(3) y = 2/3x

(4) y = 3/2x

Which of the following equations has the coordinates (9,6)?

3/2x

There are 3x-2 trees planted in each row of a rectangular parcel of land. If there are total of 24x-16 trees planted in the parcel , how many rows of trees are there in the parcel?

8

A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. The sandwiches cost $7.75 each and the soups cost $4.50 each. If the total cost of all 18 lunches was $113.50, how many sandwiches were ordered?

10

Here are the following equations:

(1) x^2 − 2x − 3 = 0

(2) x^2 + 2x - 3 = 0

(3) x^2 - 4x + 3 = 0

(4) x^2 + 4x + 3 = 0

Which of the following equations has both 1 and -3 as solutions?

X^2 + 2X - 3

In the xy plane, what is the y-intercept of the graph of the equation y=2(x + 3)(x - 4)?

-24

x^4 - 1 =

(x + 1)(x - 1)(x^2 + 1)

(3x^2 y^3 )^3 =

27 x^6 y^9

If the square root of 5 - X equals 4, then x =

-11

If X - 1 / X = 20, then X =

-1/19

A ball was kicked into the air from a balcony 20 ft above the ground , and the ball's height above the ground, in feet, t seconds after the ball was kicked was h(t) = 20 - 16t^2 + 32t. What was the maximum height, in feet, of the ball above the ground after it was kicked?

36

The yard behind behind the Cindy's house is rectangular in shape and has a perimeter of 72 ft. If the length of the yard is 18ft longer than the width of the yard, what is the area of the yard in square ft?

243.