Solve for x
2x + 2 = 18
x = 8
If Rosa's age is represented by R, write an inequality that represents the statement "Rosa is at most 29 years old"?
R < 29
Write an equation: I am thinking of a number such that 6 less than the product of 7 and this number is 85.
7x - 6 = 85
Is this a function: {(1, 2), (2, 3), (2, 4)}
No
What is the slope?
y = 4x + 7
4
3x + 4 = 7
x = 1
Write an inequality, let h represent the height of a rider: All riders must be at least 48 inches tall.
h > 48
Robin spent $17 at an amusement park for admission and rides. If she paid $5 for admission, and rides cost $3 each, write an equation that can be used to find, r, the number of rides she went on.
5 + 3r = 17
What is the speed, in meters per second, of a paper airplane that flies 30 meters in 5 seconds?
6 meters per second
What is the y-intercept?
y = 0.5x - 6
-6
3x + 3 - 2x = 21
x = 18
Write as an inequality: Eight less than three times a number is greater than fifteen.
3x - 8 >15
Write an equation: One-half of a number is 8 less than two-thirds of the number
(1/2)x = (2/3)x - 8
Use the order of operations to calculate:
4 + 2 * (6 - 3)
10
What is the slope?
2x + 3y = 6
-(2/3)
4x - 5 - 3x + 2 - 2x = 9
x = -12
Roger is having a picnic for 78 guests. He plans to serve each guest at least one hot dog. Each package, p, contains eight hot dogs. Write an inequality to determine how many packages of hot dogs Roger needs to buy?
8p > 78
Josie has $2.30 in dimes and quarters. She has two more dimes than quarters. Write an equation to determine x, the number of quarters she has?
0.25x + 0.10(x+2) = 2.30
During a recent winter, the ratio of deer to foxes was 7 to 3 in one county of New York State. If there were 210 foxes in the county, what was the number of deer in the county?
490 deer
What is the y-intercept?
4x - 6y = 12
-2
21 + x = 2(x - 6)
x = 33
Carol plans to sell twice as many magazine subscriptions as Jennifer. If Carol and Jennifer need to sell at least 90 subscriptions in all, write an inequality to determine how many subscriptions, x, Jennifer needs to sell.
2x + x > 90
Rhonda has $1.35 in nickels and dimes in her pocket. If she has six more dimes than nickels, which equation can be used to determine x, the number of nickels she has?
0.05x + 0.10(x + 6) = 1.35
What makes a relation not a function?
If one input value is associated with more than one output value the relation is not a function.
Determine the slope AND y-intercept of:
2y - 8x = 16
slope is 4
y-intercept is 8