A maths teacher bought 40 calculators at $8.20 each and a number of other calculators costing $2.95 each. In all she spent$387. How many of the cheaper calculators did she buy?

What is the range of the data set? 0|1 4 4 1|1 2 7 2|0 3|5 5 4|8 Key: 3|5 means 35

Supplementary angles with measures (2x+3) and (3x+2)

Which equation represents the graph? (y-1) ^2/49-x^2/81=1 (y-1) ^2/7-x^2/9=1

Simplify (10 x 10^5) / (2 x 10^-5)

According to the distributive property, a (5 + b) = A) 5a + b B) 5a + ab C) a (b + 5) D) 5 (a + b) 4

Find the value of y when x=2 - x - (-2) = y

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student is chosen randomly from this group. What is the probability that the student takes either Art or Music courses? 57

5% of what number is 63?

Find the sum of the "n" terms of the series: Sn=1²+3²+5² + ... + (2n-1) ²

Aimee's karate class last 1 hour and 15 minutes and is over at 5:00 pm. what time does Aimee's karate class start?