Ralph bought 3 boxes with 20 pencils each and 4 boxes with 10 pens each. To find the total number of pencils and pens, Ralph evaluated 3*20+4x10=720. is his answer reasonable? Explain.

Oak grove and salem are 87 mi from each other. How far apart would the cities be on a map that has a scale of 5in: 29mi

30% of the cars sold by Car Dealer A were blue. 50% of the cars sold by Car Dealer B were blue. Which statement must be true? If both dealers sold the same number of cars, Car Dealer B sold 20 more blue cars.

Find the sum of the arithmetic sequence. 5, 7, 9, 11, ..., 23

Jenny's pencil case is 24 cm long, 11 cm wide, and 4 cm high. What is the longest length, in cm, of a pencil that can fit in Jenny's case? A. 21.7 B. 24.3 C. 26.4 D. 26.7

How many solutions does this problem have? 3 (y+41) = 3y+123

2. A chain 5 links long is joined to a chain 7 links long. How many links long is the resulting chain?

Evaluate f³+11g-4h when f=3, g=2, h=11

An=-31 + (n-1) - 11 find the eleventh term

Brian works in the lab and feels an empty cylindrical flask with 200 cubic centimeters of liquid. The flask has a radius of 3 cm and a height of 12 cm. What percent of the volume of the flask is not filled with liquid?

436% of what number is 31.61