Erin had 6 pens Justin gave her some more now she has 9 pens how many did Justin give her

1/3 (3 + 2x) - 1 = 10 [ ] x = 6 2/3, x = 15, x = 20 or x = 5

Melvin has 1/2 of a cake. He shares the cake equally with each of 2 friends and himself. Show me how u got your answer

Given (x - 7) 2 = 36, select the values of x.

A new cellular phone tower services all phones within a 17 mile radius. Doreen lives 15 miles and and 8 miles south of the tower. Is she within the area serviced by the tower. Explain

A computer printer can print a 840-word document in 20 seconds. At this rate, how many seconds are required to print a document that contains 930 words?

Which number has the least absolute value? A) 30 B) 10 C) - 20 D) - 40

43 is a 2 digit odd number that is composite

Lisa has 1/3 of an hour to read and watch television. She wants to split her time equally between the two activities

For what value of x does 64^3x = 512^2x+12

Select the letter of the best answer choice. Use 3.14 or 22/7 for π what is the circumference of a circle with a diameter of 21 ft? round your answer to the nearest foot. A) 132 ft B) 66 ft C) 44 ft D) 33 ft