Solve 7w - 3r = 15 for r. Show your work.

Recall the symbol Z represents the complex conjugate of z. If z=a+bi and w=c+di show that the statement is true zw=z*w

4 out of 5 doctors use x brand aspirin if 1500 doctors were surveyed how many used x brand aspirin

Solve 58x29 using an area model

How many outcomes are there in the sample space for rolling 2 dice?

A textbook store sold a combined total of 480 history and math textbooks in a week. The number of history textbooks sold was two times the number of math textbooks sold. How many textbooks of each type were sold?

423% of what number is 88.83

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 28 sit-ups.

34 is 75% of what number?

How many crowns are 45 shillings

Beach Bike Rentals charges $5.00 plus $0.20 per mile to rent a bicycle. Write an equation for the total cost of renting a bicycle and riding for m miles.