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?

The ratio of length to width is 2:3. Fine the length of the rectangle when the area is 150 in.^2

For all real numbers a and b, if ab=0, then a=0 or b=0. True or false?

4+3 + 3 + 10 + 5 = 25 What is the average value?

John is 4 inches taller than David, who is K inches tall. Write an expression for johns hight in inches

A car travels 300 miles in 10 hours at a constant rate. If the distance traveled by the car can be represented as a function of the time spent driving, what is the value of the constant of variation, K? O 1/30 mph 30 mph 60 mph 3000 mph

Sam's dry cleaning store has 3 employees who fold the clothes. Each employee can fold 45 shirts every hour.

Which, if any, of the following statements are true?. Check all that apply. a. The stronger the base, the smaller the KbKb. b. The stronger the base, the larger the pKbpKb. c. The stronger the base, the smaller the pKbpKb. d.

6r+7=13+7r how do you solve this?

A chocolate shop has 32 chocolates with orange filling, 10 chocolates with strawberry filling and 5 chocolates with coconut filling.

Several friends wanted to rent a summer cottage for $320. When two more people joined the group, each person's share was reduced by $8.00. How many were in the original group?