Rational Number Operations
-15 + 9
-6
2x-7=-13
x=-3
If Katie makes $12 per hour. How much would she make in 5 hours?
$60
A book that costs $8 is marked up by 50%. What is the price increase?
$4
What is the area of a triangle with a base of 12 and a height of 6?
36 units2
5x5.6
28
4x+6=-30
x=-9
Katie makes $63.70 babysitting for 6.5 hours. How much money does she make per hour?
$9.80
It takes me 20 minutes to read two chapters. How long will it take to read 6 chapters?
60 minutes.. 1 hour
What is the area of a square with a side length of 4?
16 units2
12-9*-8
84
x/2 -8=10
x=36
A pair of shoes that normally cost $24 is 25% off. What is the selling price of the shoes?
$18
In 1990, a radio costs $25. Now the radio costs $5. What is the percent of change?
80%
A bag contains 5 red marbles, 8 green marbles, 6 orange marbles, and 11 yellow marbles. What is the probability of randomly choosing an orange marble?